National credit systems never informed me of my right to dispute my debt. I found out I had a collection against me by recently pulling my credit. Our initial contact was XX/XX/2015. I have 30 days to dispute after our initial contact. I sent them certified mail which was signed by XXXX XXXX stating I need validation that they are liscensed to collect a debt in alabama, proof that they own the debt and the debt is mine .They then sent me a letter dated XX/XX/XXXX that only stated I owe XXXX sent by XXXX XXXX. The letter did not break down what I was being charged for nor did they include the original creditors address not did they proof they own the debt. I called them thursday XX/XX/XXXX and spoke with XXXX XXXX to let them know this is not proper form of validation. They then sent me another letter stating I now owe them {$2200.00}. This is false representation of a debt which violates the FDCPA. Attached with the letter was a copy of a lease. On the first page of the lease was a move in/ move out check out list THAT DID NOT HAVE MY SIGNATURE, it was signed by another person. I am being charge for damages to a property when my signature was not even on the move in or check out list.There were XXXX signatures on the last page of the lease that does not look like my signature. I never agreed to these charges. This is not my debt and they are breaking the law by falsely representing a debt as well as deformation of character.