I sent a certified letter to Trauner, Cohen and Thomas (Lawfirm) asking for explanation of the debt they said I owe, as well as, request of no further phone contact. I specifically said "Finally, I am requesting that all future communication be through the mail. Please do not contact me on the phone any further." They have called me 3 times since they received the certified letter, which I have the signed copy. They've left 2 voicemails and sent me one text. Who can I talk to about supporting me with counter suing?