We recognize that experiencing a hold on your checking account is frustrating.
The pre-authorization sum is a temporary hold of a specific amount from the available limit on the credit & debit card. It is used to verify that the card is active and has sufficient credit prior to the fuel transaction. Once the fuel transaction is completed, the bank will receive a notification on the final amount payable, and any unutilized amount from the pre-authorization sum will be credited back into your account within their predetermined set of business days depending on their Pend or Hold policy.
In case you have not received the amount back within the stipulated timeline, please immediately contact your bank as you would need to raise a dispute with them.