Today i received a 'formal demand for payment' from a debt collection agency. The letter came to my address but was addressed to someone i don't know and as far as i know has never lived here. The debt appears to be for an unpaid transaction in EBAY. I spoke to the debt collector who said they would stop sending any more demands, but refused to send me a letter confirming this. I have also mailed EBAY with all this. Has anyone else experienced this? Is there any search i can do to check if my address is being used elsewhere without my knowledge? Any advice would be appreciated..