National Telecom Services, Inc. National Telecom Failure/Refusal to pay subcontractors Pittsburgh Pennsylvania

We have been hired by National Telecom Services, Inc. numerous times, and we are owed money as far back as 2013, and they refuse to pay us for our services. We constantly call and get a sob story from their accounts payable people. They constantly change their accounts payable contact person, and each one has a different story as to why you can't get paid, or they will tell you that they will pay the balance down a little at a time, but you will never receive a payment. It's really shocking that this company is still operating. We have to disrupt our operations to address them in court with a lawsuit, because they feel that paying the subcontractors are the least important of people to get paid, although we are the ones that actually perform the work that enables them to get paid. Customers and subcontractors, BEWARE of this company!