I was contacted via telephone XXXX of Recovery Management Services that I was in debt {$4900.00}. I disputed the amount and wrote a letter to the company asking for verification and sent it Certified Return Reciept Requested on XXXX XXXX, 2015. I wrote another letter asking them to cease and desist further attempts to contact me which was sent same method on same day. I got my return reciept back with signature XXXX as recipient on XXXX XXXX, 2015. I am still receiving calls which I let ring and I got a notice in the mail that they are now willing to negotaite to settle but still have not proved I owe the amount they are trying to collect.