Debt collector has COPY of signed contract, Bill of Sale, Agreement & Assumption Agreement witb no account number or borrower name (although there is an attached list of account numbers, 1 of which they put my name beside, but is not titled Appendix A, etc., like a spreadsheet), and an affidavit of claim from the collector, statement of account on the DC letterhead, but no proof that the charge off date or last payment date was provided by the OC. I believe this information was obtained from OC report to credit bureau. No additional documents, even though I have requested them.(Stated that they are still waiting on them from OC). No payment history, proof of amount owed, etc. Have gone to mediation. I refused to settle. Do I have a good case?