From a Google search for Apex Merchant, this is the best I can come up with. Their main number is: 214-440-0200. I called them and you get all kinds of departments except customer service. I tried the "operator" and all I got was voice mail... so I hung up. I opted to talk with sales, and the lady said she would take my number off the list to not call. Well, guess what? Still calling, and still not leaving a message. Apparently they are just a business "hunting" for suckers to give them their credit card numbers etc... If you get a call, call the number above and complain and demand them to remove your number. If enough people keep calling, and taking up their time they might get the hint. Call ever time they call... keep a record and read it back to them every time you asked to have your number removed, and let them know that you are on the DO NOT CALL list, and are reporting it every time they call. Maybe sooner or later they will get the hint.
APEX Merchant Group
6652 Pinecrest Dr. Suite #400
Plano, TX 75024
Local: (214) 440-0200
Toll Free: (888) 330-APEX (2739)
APEX Merchant Group is the foremost expert in the Electronic Processing Industry.
We offer outstanding high quality solutions to all of your payment processing needs; including: credit card, debit card, EBT card processing, electronic check conversion, check guarantee, gift and loyalty cards and e-commerce solutions.