Pre-authorization transaction is the process of freezing the cardholder's account balance (or credit line) in advance and then deducting the money on the closing day. It adapts to the business needs of hotels, car rentals, etc., which need to reserve a guest deposit when the consumption amount is uncertain. Guests can spend within the deposit range and pay in one lump sum after consumption, providing convenient services for cardholders and providing comprehensive protection for merchants' funds.

On July 25, the car rental was frozen at 3,000 yuan. When returning the car in August 1, the merchant made a "pre-authorization" operation for the frozen amount of 2000 yuan. "Pre-authorization completed" means that when the guest checks out, if he has done pre-authorization, he will do "pre-authorization completed" according to the actual consumption amount and make bank card payment. That is, if the pre-authorization of 2000 yuan is completed, 2000 yuan will be deducted from the frozen 3000 yuan (actual consumption), and the pre-authorization amount 1000 yuan will be automatically unfrozen.

The repayment date of this bill is August 25th, and the reverse billing date is August 7th. Therefore, the transaction on August 1 day will be settled in the current bill on August 7, and the cardholder still needs to repay according to the bill amount before August 25.

If there is no violation during the lease period, the merchant will cancel at the specified time and refund the amount to the customer. The specific cancellation and refund time is subject to the description of the merchant.