I.C. System, Inc. Debt Collection Complaint

I.C. System, Inc. Debt collection department,

Other (phone, health club, etc.) Cont'd attempts collect debt not owed Debt was paid Oklahoma

I had service with att for home and wireless service on combine billing, my home bill part was approx - per month and my wireless varied between - and - a month. After a while I had the home phone service canceled because I was not using and was not under contract for that. I kept wireless until - of 2013 and then I canceled service and went with another provider. I received a final bill from att for - which I paid in full. A few months later I check my credit report and there 's a collection on there for -. I called att and they could not find where I owed them anything or where it was in collections. So I disputed with credit bureaus and they removed it. The collection agency then sold the collection agency to another agency and it showed back up on my credit report, so I dispute again and it 's removed again. So now it 's sold again and some company if systems has it on my credit report again and the bureau will not take it off this time. I have asked for disclosure of this collection and why I owe it and have not received it. I have no idea of how I owe this or where the amount came from.