I have sent both NCO and Credit one certified letters to stop calling me and to send all correspondance through the mail and i still get 12 calls a day from each company. I have sent 3 different letters and filed complaints with everyone i can file a complaint with and NOTING is being done.
I myself receive basically the same amount of call and I disconnect, I don't answer, however I have dialed them from a business number and it states it's not a valid number