Recently I received a notice from Credit Clearing House of America in Louisville, Kentucky. They said I owed $160 on a unpaid dental bill. I did not owe any such bill, so I sent a letter back to them requesting validation of this debt. These idiots send me back a bill from the dentist's office that says I have a $0 balance due. So, why is a collection agency sending be a letter telling me I owe something, when then the bill itself says I owe nothing? The problem with people like this is they are out to make a buck off of someone else, so they harass & send out nasty letters. All I can say is sue for it & then I will have a field day with you in court. I hate people like this & would nothing more than to get some payback.