I am questioning this collection letter and the utility company because I no longer had gas service with the utility company since December of 1999. When I received the letter from the collection agency I contacted them. They had no information about this account except that the gas company turned it into collections. The person I spoke with at the collection agency stated they would contact the utility company for more information. Today I contacted the gas company regarding this account in collections. The gas company stated that I contacted them in November of 1999 requesting a final bill because I was moving. In December of 1999 they received final payment from me. The gas company states that my account balance is zero. All the gas company could tell me is to contact the collection agency because its in their hands now. So it has been 4 years since I had service with the gas company and now all of a sudden I'm in collections. I have obtained credit reports over these last 4 years and there is no account on my credit report showing I owe the gas company anything, nor is the gas company even listed on my credit report. There is also no collection accounts on my credit report. The gas company nor any collection agency has contacted by phone or mail in 4 years. What can I do or what should I do. If someone could please give me some help it would be greatly appreciated.