Chargebacks
If you do not recognize a charge, an invoice appears incorrect, or there is a problem with a purchase, gather the lot number, invoice, payment record, and any messages. Contact the auction company promptly so it can investigate and try to resolve the issue.
You may also contact your card issuer about a billing error or an unauthorized transaction. Follow the issuer's instructions and applicable deadlines to preserve any rights you have. Do not claim a transaction was unauthorized if you made it; provide accurate information about the dispute. A payment dispute and the auction company's return policy are separate matters.