This Act requires your credit company to provide prompt correction of credit and charge card billing errors. However, there are certain things you must do to protect your rights.
If you find an error on your bill, you should write a letter to the credit card company's customer service department right away. Your letter must reach the credit card company within 60 days after the bill was mailed. Include your name, card number and the amount involved in the letter. Briefly describe the error. Make sure to include a copy of the bill and any receipts. Keep your originals and a copy of your letter.
The credit card company must acknowledge your letter or correct the error within 30 days. If the credit card company disagrees with you, it must write back within 90 days (or two billing cycles, whichever is less). During this time, the credit card company can't report the disputed amount to a credit bureau as overdue. If your claim is confirmed, any interest charged on the disputed amount must be dropped.