My student loan was through XXXX. At some point servicing was transferred to American Education Services XXXX AES ). I have never received a statement or bill for payment from AES. Approx 4 weeks ago, my wife as co-signer received a letter from AES indicating payment on the loan was past due. On that letter my name was listed but the address for me was in XXXX. I live in XXXX. I have never been to XXXX nor do I have any association with anyone in XXXX. AES was contacted. I was told that the information they had received from XXXX was incorrect and they had been sending my statements to the XXXX address. I was told everything would be fixed. Within approximately one week, I received a letter from AES indicating my loan was in deferment. On XXXX/XXXX/15, I received a letter from a collection agency " XXXX XXXX '' indicating that I had failed to make payments and the loan was at risk of charge off. I contacted XXXX and was told that my loan was 99 days overdue with charges accruing. I have never received a statement from AES indicating payment was due. In my phone conversation with AES approx 3-4 weeks ago, I was never informed there was a problem with payment. The letter sent to my wife indicating the payment was overdue was based on a loan associated with the individual in XXXX with a different social security number and address. Since the loan is showing past due it has affected my credit score as AES reported 30, 60, and 90 day lates.