844 8 STACK 6 [email protected]

Service & Support

What Clients Are Saying

Very informative and patient!

Cameron was very informative and patient with us, he took the time out to explain how the system operates and answered every question we had about the operation of the system. He will be following up with us as we learn to get this running efficiently for our needs. Enjoyed working with him.

Carla Minniear

The VP from Stack 6 came and explained everything about the system. Then their support team came in and did most of the installation and training in person. The installation was a professional job from start to finish. Not only do my employees love this system, but also my customers. It is very quick and user-friendly. 
Billy Chuck

President, Two Bills Fish Company

Highly recommended.

Dave and Beth were an absolute delight to work with. While the subject matter was more than we were expecting, the insight and depth of knowledge that they brought to the table was impressive. The installation and training went off just as promised and we love our new phones and clover system.

Susan Brenner

Highly recommend!

Susan is very professional, friendly, and got our installation done quickly. He trained us and got us up and running in no time! Processing credit cards is now easier than ever.

Ana Wing

3 years ago

Five stars!

Phenomenal service in the interview and installation process. Couldn’t be happier with the service and support! Extremely conducive to our medical office in terms of professionalism and support.

Lysandro Tapnio

3 years ago

Fast, friendly service.

Service Techs are very knowledgeable.

Highly recommended.

Dwin Ochialli

Outstanding Results.

Switched my credit card processing to STACK SIX after meeting with the local VP. This is the best move I’ve ever made because the 5% discount program is helping me to dramatically reduce my processing fees.

Michael Cotton

2 years ago

The absolute best service, I would highly recommend their services. Our rep came in to help us set up and upgrade our credit card system and he was an absolute delight. He made sure we were fully trained, answered any questions we had, set everything up nice and neat and even got us a new router so our internet issues would stop.

Arianne Betancourt

Very sharp support staff. Service is very fast and efficient. I highly recommend this company.
GENTLE BREEZE DENTAL

Amazing experience!

Very fast and took care of all my needs. Service was excellent and definitely sign up with this company if you don’t have them already.

Classic Home Billiards

I’ve been processing with First Data for quite a while so when I changed over to the wholesale program I thought I knew what to expect. I figured there would be some savings. What really impressed me was the attention to detail.

They know who you are when you call. In fact, it’s the same 4 people for years now assigned to my account.
I’ve heard the phrase team approach used frequently, but not with this kind of results.

Very impressed.

David Wentworth

Thank you for your outstanding services!

The technicians and sales rep have been professionally helpful in starting me up with your terminals. I look forward to a good relationship with our businesses.

UPDATE: Had a question so I Pushed Call Me right on the terminal and they called me right back, literally 5 seconds!  The issue required an onsite visit.  So I contacted our rep and he was here in 15 minutes FLAT!

Roddy Tucker

Great company, excellent service. Loved their personalized installation approach. For the first time in many years, I’m not tripping over my wires. The installer took the time to organize neatly all of my wires under the counter. Thanks, guys! 🙂
Dining Alternatives

3 years ago

“NPA has gone above and beyond to help set us up and train us.”

We here at C&H Automotive love our new Clover systems. They have gone above and beyond to help set us up and train us on the new systems. We are able now to use clover to reach out even more to our customers.

Thanks,

Chris Guthrie

C&H Automotive

Rick is such a knowledgeable technician. He is “on it”! Thank you Rick~!

S Norris

I’ve been with National for a while and when they called the other day to ask me to write a review I said I’d be glad to. I’ve never had one issue the entire time I’ve used their services. They know their business, don’t monkey around with rates.

UPDATE: Just received my equipment upgrade as promised and was installed by Christian who was clean, knowledgeable and efficient.

Frank Taylor

Great Rates

The installer was amazing. Photoshopped our logo onto our receipts. The training was a breeze and our new terminals really make a statement. Thank you, for delivering on your promises!

UNIVERSITY HEALTH CENTER

It’s not often that I find the time to write a review, however, I am very impressed. They have an excellent program for Medical Professionals; like myself that saves us a great deal of money!

Their service has proven to be reliable and accommodating to my business needs. They have a well-rounded team of experts that can provide solutions for any problem and are available when needed. The POS system’s esthetic is both elegant and high-tech.

The training and installation were as expected. Superior cable management and very little disruption to our workday. This was very important in an office that sees up to 80 patients a day.

I highly recommend this group to those in need of their services.

Dr. Jacob McClean

Medical Director, Grand Living 21

We had a great experience without technicians Cameron and Rick. They were very thorough and answered all our questions, and concerns. I would highly recommend them!!! They can come to work for us any time.
Nance Patton

2 years ago

Great Experience!

The tech was very helpful and knowledgeable! He went above and beyond to even get us a router and create Wi-Fi for our office. We had the Clover system installation today and this is one of the best systems for payment processing I have experienced. Definitely like the choice of apps to make our lives easier!!

Dr. Stephen Grussmark

As an office manager for a two location Orthodontist office, I deal with a lot of service providers. I have to say that everyone is very helpful, kind and courteous. They actually install equipment in person, went the extra mile to add switching equipment and didn’t even charge us for the time or parts.
The system works flawlessly and the rep was highly trained and very unobtrusive to our workflow during the install. I love the fact that our logo shines brightly on the devices at the checkout counter.

Marian Ruiz

“I would never have expected such a great service.”

The rep came out to install and train us on our new Clover System in person. This surprised me as the business next door received their Clovers in the mail from their bank and ended up spending hours on the phone trying to set up everything. NPA they did a fantastic job, and I would never have expected such a great service. The installation was done with the highest quality possible and the rep was very professional and informative in explaining the system and the process. We have been using the system for over two years now and love its many features and addons which help streamline my business workflow with seamless accounting and client managing software.

Christian Salvetiu

Service & Support

What Clients Are Saying

Very informative and patient!

Cameron was very informative and patient with us, he took the time out to explain how the system operates and answered every question we had about the operation of the system. He will be following up with us as we learn to get this running efficiently for our needs. Enjoyed working with him.

Carla Minniear

The VP from Stack 6 came and explained everything about the system. Then their support team came in and did most of the installation and training in person. The installation was a professional job from start to finish. Not only do my employees love this system, but also my customers. It is very quick and user-friendly. 
Billy Chuck

President, Two Bills Fish Company

Highly recommended.

Dave and Beth were an absolute delight to work with. While the subject matter was more than we were expecting, the insight and depth of knowledge that they brought to the table was impressive. The installation and training went off just as promised and we love our new phones and clover system.

Susan Brenner

Highly recommend!

Susan is very professional, friendly, and got our installation done quickly. He trained us and got us up and running in no time! Processing credit cards is now easier than ever.

Ana Wing

3 years ago

Five stars!

Phenomenal service in the interview and installation process. Couldn’t be happier with the service and support! Extremely conducive to our medical office in terms of professionalism and support.

Lysandro Tapnio

3 years ago

Fast, friendly service.

Service Techs are very knowledgeable.

Highly recommended.

Dwin Ochialli

Outstanding Results.

Switched my credit card processing to STACK SIX after meeting with the local VP. This is the best move I’ve ever made because the 5% discount program is helping me to dramatically reduce my processing fees.

Michael Cotton

2 years ago

The absolute best service, I would highly recommend their services. Our rep came in to help us set up and upgrade our credit card system and he was an absolute delight. He made sure we were fully trained, answered any questions we had, set everything up nice and neat and even got us a new router so our internet issues would stop.

Arianne Betancourt

Very sharp support staff. Service is very fast and efficient. I highly recommend this company.
GENTLE BREEZE DENTAL

Amazing experience!

Very fast and took care of all my needs. Service was excellent and definitely sign up with this company if you don’t have them already.

Classic Home Billiards

I’ve been processing with First Data for quite a while so when I changed over to the wholesale program I thought I knew what to expect. I figured there would be some savings. What really impressed me was the attention to detail.

They know who you are when you call. In fact, it’s the same 4 people for years now assigned to my account.
I’ve heard the phrase team approach used frequently, but not with this kind of results.

Very impressed.

David Wentworth

Thank you for your outstanding services!

The technicians and sales rep have been professionally helpful in starting me up with your terminals. I look forward to a good relationship with our businesses.

UPDATE: Had a question so I Pushed Call Me right on the terminal and they called me right back, literally 5 seconds!  The issue required an onsite visit.  So I contacted our rep and he was here in 15 minutes FLAT!

Roddy Tucker

Great company, excellent service. Loved their personalized installation approach. For the first time in many years, I’m not tripping over my wires. The installer took the time to organize neatly all of my wires under the counter. Thanks, guys! 🙂
Dining Alternatives

3 years ago

“NPA has gone above and beyond to help set us up and train us.”

We here at C&H Automotive love our new Clover systems. They have gone above and beyond to help set us up and train us on the new systems. We are able now to use clover to reach out even more to our customers.

Thanks,

Chris Guthrie

C&H Automotive

Rick is such a knowledgeable technician. He is “on it”! Thank you Rick~!

S Norris

I’ve been with National for a while and when they called the other day to ask me to write a review I said I’d be glad to. I’ve never had one issue the entire time I’ve used their services. They know their business, don’t monkey around with rates.

UPDATE: Just received my equipment upgrade as promised and was installed by Christian who was clean, knowledgeable and efficient.

Frank Taylor

Great Rates

The installer was amazing. Photoshopped our logo onto our receipts. The training was a breeze and our new terminals really make a statement. Thank you, for delivering on your promises!

UNIVERSITY HEALTH CENTER

It’s not often that I find the time to write a review, however, I am very impressed. They have an excellent program for Medical Professionals; like myself that saves us a great deal of money!

Their service has proven to be reliable and accommodating to my business needs. They have a well-rounded team of experts that can provide solutions for any problem and are available when needed. The POS system’s esthetic is both elegant and high-tech.

The training and installation were as expected. Superior cable management and very little disruption to our workday. This was very important in an office that sees up to 80 patients a day.

I highly recommend this group to those in need of their services.

Dr. Jacob McClean

Medical Director, Grand Living 21

We had a great experience without technicians Cameron and Rick. They were very thorough and answered all our questions, and concerns. I would highly recommend them!!! They can come to work for us any time.
Nance Patton

2 years ago

Great Experience!

The tech was very helpful and knowledgeable! He went above and beyond to even get us a router and create Wi-Fi for our office. We had the Clover system installation today and this is one of the best systems for payment processing I have experienced. Definitely like the choice of apps to make our lives easier!!

Dr. Stephen Grussmark

As an office manager for a two location Orthodontist office, I deal with a lot of service providers. I have to say that everyone is very helpful, kind and courteous. They actually install equipment in person, went the extra mile to add switching equipment and didn’t even charge us for the time or parts.
The system works flawlessly and the rep was highly trained and very unobtrusive to our workflow during the install. I love the fact that our logo shines brightly on the devices at the checkout counter.

Marian Ruiz

“I would never have expected such a great service.”

The rep came out to install and train us on our new Clover System in person. This surprised me as the business next door received their Clovers in the mail from their bank and ended up spending hours on the phone trying to set up everything. NPA they did a fantastic job, and I would never have expected such a great service. The installation was done with the highest quality possible and the rep was very professional and informative in explaining the system and the process. We have been using the system for over two years now and love its many features and addons which help streamline my business workflow with seamless accounting and client managing software.

Christian Salvetiu

Service & Support

What Clients Are Saying

Very informative and patient!

Cameron was very informative and patient with us, he took the time out to explain how the system operates and answered every question we had about the operation of the system. He will be following up with us as we learn to get this running efficiently for our needs. Enjoyed working with him.

Carla Minniear

The VP from Stack 6 came and explained everything about the system. Then their support team came in and did most of the installation and training in person. The installation was a professional job from start to finish. Not only do my employees love this system, but also my customers. It is very quick and user-friendly. 
Billy Chuck

President, Two Bills Fish Company

Highly recommended.

Dave and Beth were an absolute delight to work with. While the subject matter was more than we were expecting, the insight and depth of knowledge that they brought to the table was impressive. The installation and training went off just as promised and we love our new phones and clover system.

Susan Brenner

Highly recommend!

Susan is very professional, friendly, and got our installation done quickly. He trained us and got us up and running in no time! Processing credit cards is now easier than ever.

Ana Wing

3 years ago

Five stars!

Phenomenal service in the interview and installation process. Couldn’t be happier with the service and support! Extremely conducive to our medical office in terms of professionalism and support.

Lysandro Tapnio

3 years ago

Fast, friendly service.

Service Techs are very knowledgeable.

Highly recommended.

Dwin Ochialli

Outstanding Results.

Switched my credit card processing to STACK SIX after meeting with the local VP. This is the best move I’ve ever made because the 5% discount program is helping me to dramatically reduce my processing fees.

Michael Cotton

2 years ago

The absolute best service, I would highly recommend their services. Our rep came in to help us set up and upgrade our credit card system and he was an absolute delight. He made sure we were fully trained, answered any questions we had, set everything up nice and neat and even got us a new router so our internet issues would stop.

Arianne Betancourt

Very sharp support staff. Service is very fast and efficient. I highly recommend this company.
GENTLE BREEZE DENTAL

Amazing experience!

Very fast and took care of all my needs. Service was excellent and definitely sign up with this company if you don’t have them already.

Classic Home Billiards

I’ve been processing with First Data for quite a while so when I changed over to the wholesale program I thought I knew what to expect. I figured there would be some savings. What really impressed me was the attention to detail.

They know who you are when you call. In fact, it’s the same 4 people for years now assigned to my account.
I’ve heard the phrase team approach used frequently, but not with this kind of results.

Very impressed.

David Wentworth

Thank you for your outstanding services!

The technicians and sales rep have been professionally helpful in starting me up with your terminals. I look forward to a good relationship with our businesses.

UPDATE: Had a question so I Pushed Call Me right on the terminal and they called me right back, literally 5 seconds!  The issue required an onsite visit.  So I contacted our rep and he was here in 15 minutes FLAT!

Roddy Tucker

Great company, excellent service. Loved their personalized installation approach. For the first time in many years, I’m not tripping over my wires. The installer took the time to organize neatly all of my wires under the counter. Thanks, guys! 🙂
Dining Alternatives

3 years ago

“NPA has gone above and beyond to help set us up and train us.”

We here at C&H Automotive love our new Clover systems. They have gone above and beyond to help set us up and train us on the new systems. We are able now to use clover to reach out even more to our customers.

Thanks,

Chris Guthrie

C&H Automotive

Rick is such a knowledgeable technician. He is “on it”! Thank you Rick~!

S Norris

I’ve been with National for a while and when they called the other day to ask me to write a review I said I’d be glad to. I’ve never had one issue the entire time I’ve used their services. They know their business, don’t monkey around with rates.

UPDATE: Just received my equipment upgrade as promised and was installed by Christian who was clean, knowledgeable and efficient.

Frank Taylor

Great Rates

The installer was amazing. Photoshopped our logo onto our receipts. The training was a breeze and our new terminals really make a statement. Thank you, for delivering on your promises!

UNIVERSITY HEALTH CENTER

It’s not often that I find the time to write a review, however, I am very impressed. They have an excellent program for Medical Professionals; like myself that saves us a great deal of money!

Their service has proven to be reliable and accommodating to my business needs. They have a well-rounded team of experts that can provide solutions for any problem and are available when needed. The POS system’s esthetic is both elegant and high-tech.

The training and installation were as expected. Superior cable management and very little disruption to our workday. This was very important in an office that sees up to 80 patients a day.

I highly recommend this group to those in need of their services.

Dr. Jacob McClean

Medical Director, Grand Living 21

We had a great experience without technicians Cameron and Rick. They were very thorough and answered all our questions, and concerns. I would highly recommend them!!! They can come to work for us any time.
Nance Patton

2 years ago

Great Experience!

The tech was very helpful and knowledgeable! He went above and beyond to even get us a router and create Wi-Fi for our office. We had the Clover system installation today and this is one of the best systems for payment processing I have experienced. Definitely like the choice of apps to make our lives easier!!

Dr. Stephen Grussmark

As an office manager for a two location Orthodontist office, I deal with a lot of service providers. I have to say that everyone is very helpful, kind and courteous. They actually install equipment in person, went the extra mile to add switching equipment and didn’t even charge us for the time or parts.
The system works flawlessly and the rep was highly trained and very unobtrusive to our workflow during the install. I love the fact that our logo shines brightly on the devices at the checkout counter.

Marian Ruiz

“I would never have expected such a great service.”

The rep came out to install and train us on our new Clover System in person. This surprised me as the business next door received their Clovers in the mail from their bank and ended up spending hours on the phone trying to set up everything. NPA they did a fantastic job, and I would never have expected such a great service. The installation was done with the highest quality possible and the rep was very professional and informative in explaining the system and the process. We have been using the system for over two years now and love its many features and addons which help streamline my business workflow with seamless accounting and client managing software.

Christian Salvetiu