If you are a victim of identity theft, it is critical that you keep detailed and accurate records of all remediation action. The FTC offers an "Identity Theft Affidavit" (available at www.ftc.gov/idtheft) to help you accurately record details of the crime. Many credit companies and financial institutions accept this form to handle your investigation.
Also:

• Keep a detailed log of all calls and conversations related to the problem. Note dates, phone numbers, names of people you spoke with, and any comments about the conversation.
• Confirm all conversations in writing, sending correspondence certified mail, return-receipt requested.
• Keep copies of all correspondence. When possible, send photocopies of statements or other information and retain the original documents.
• Note time spent and expenses incurred in clearing up the problems (e.g., save all receipts). You may be able to seek restitution for these costs.

There are excellent resources that provide more comprehensive, step-by-step lists of actions to take if you find you‘re a victim of identity fraud. The Federal Trade Commission‘s (FTC) Identity Theft web pages are particularly comprehensive: www.ftc.gov/idtheft. See For More Information.