Optimum Outcomes, Inc. filed a collection on my credit report. In the past, my late fathers medical bills had been mixed with my bills because I cared for him and we shared the same doctors. I disputed the debt with the credit reporting agency. Their investigation came back verified. I contacted Optimum outcomes and the lady was rude and was not willing to communicate other than stating I owed the debt. I then wrote a request to Optimum Outcomes for proof of the debt. They responded with only a letter showing the same information that was on the credit report and stated this was their validation and they were only required to do this once. No proof of agreements between me and the original creditor, the creditor and collector, payment history, original agreement, itemized statement or anything else that would prove the debt. Only XXXX insulting letter for verification.