You always have the right to view any information pertaining to the validity of any debt.
You know which debts you owe and which ones you don't.
If you didn't sign the contract then you need to go to the police station to press charges and file a report. Especialy if you have been making payments on it durring anytime, or if you used it. Because to be totaly honest a police report is the only thing that is going to help you have this debt dropped, if it isn't yours.