On 09/13/2012 I received a letter from a collection agency claiming to collect on the behalf of AT&T wireless for an account that went to collections over 2 years ago. Within a week of receiving the letter I mailed the company a validation of debt letter via certified mail/ return receipt. It has been over 30 days and the company has not provided me with anything to confirm the validity of the account. Per the Fair Credit Reporting Act, companies must comply or delete the impormation from my credit file. I disputed the account since it is only being reported by Equifax and not TransUnion and Experian. Equifax gave me the results of the investigation claiming the debt is mine and it was verified to be me. I demanded proof from the company reporting and Equifax and neither one willprovide me with a cell phone statement from AT&T (original creditor) with my name and address on it or anything linking me this account. I am very frustrated and dont know what else to do. Any information on the matter would be helpful.