I sent Collection Co. of America a DV letter, And all they sent me back was copy of old bills/statements. These guys have only 30 day to comply....right? I have sent them another stating that I ask for more information then they sent me. All this was mail with CMRRR. What can I do if they will not reply after 30 days. They never sent me any mail until I asked for it. Whats next? I live in the state of NC.