On XXXX XXXX, 2015 at XXXX, I received a call from a gentleman who said he represented The Revenue Group. He said he mailed a letter to me in XXXX and that I did not respond. I asked him to please re-send the letter as I never received it. He refused. He said he 'd tell his client that I was unresponsive. I told him that was not correct, and I asked for the letter to explain any debt he was trying to collect. He hung up. I am not aware of ANY debt I owe that would end up in collections.