Sometimes, a system may place a "hold" on your payment card once an order is submitted, which may appear as a double charge. This hold has not yet actually been charged. If the system receives the necessary information, the card will automatically be charged, and the hold will be removed after a few business days. If you find an error in the charges and it's not a hold, you should contact customer support to investigate the issue and process a refund if necessary. The refunded amount should appear in your account within 2-3 business days.