I can't believe this happened to me.. Case of mistaken iden

091906 I received an email from my supervisor.. telling me to call John @ Global Financial. 800 654 7444 x853. How many times can he call my supervisor???. I called him and he demanded a payment today for $420.00 for a $300 pay day loan. I requested a name for the payday company. He was extremelty vague . He said he was with Fast Cash 2 a sister company of Cash Net in Delaware. I told him the name was not a familar to me. 092006 I called the customer service @ Cashnet.. They told me my two previous loans had been paid off. They said I had a current loan that was taken out on 071106..While I had them on the line I went into my bank statement and did not find any deposits from them for the entire mo of july. The customer service rep provided me with the banking info .. it did not match my info.. it was a bank in a different state.. I was transferred to a rude supervisor.. He researched this and found : the name of the applicant was the same as mine( different middle initial); the person resides in another state-but has my address and info listed on the application; the bank info was entireley different from mine. He said he would research this /clear it up. He offered to do a 3 way call with my supervisor to explain the mistake..
Should I file a complaint with some agency. Should I request something in writing from this co explaining thier mistake..