For any charges that you believe are in error, notify your credit union in writing. Use the billing error instructions that appear on the back of the periodic credit card statement.
Please note: Send your letter to the address specified after “Send Billing Inquiries to:” on the back of the statement. This address may differ from where you send your payment.
The credit card company must receive your letter within 60 days of its sending you the first statement on which the billing error appeared.