On XXXX XXXX, 2015 I wrote a letter to XXXX XXXX XXXX XXXX XXXX requesting proof that this account belongs to me. To provide me with a copy of any contract sign by me with XXXX XXXX regarding this collection account. They never responded and last week I received a letter dated XXXX/XXXX/2015 from Crosstown Law informing me that they now represent XXXX.