If you think there has been an error regarding a transaction on your statement, contact the seller to try to resolve the issue. Be sure to carefully review the seller's return, refund and cancellation policies to make sure you've followed every one.
If you can't resolve matters with the seller or your card has been used to make an unauthorized transaction, call RBC credit card support at 1-800-769-2512. You can also send RBC a secure message through the Online Banking Message Centre. Under the Customer Service tab, click Communications > Contact us > Email. View your email in the Sent Messages folder of the Message Centre.