When the customer returns the car, the deposit pre-authorized by the credit card will be offset, and the bank will automatically unfreeze it one month after you return the car. If it has not been cancelled after one month, you can call the customer service hotline of each bank to inquire about the situation and negotiate a solution. This deposit is only frozen in the bank, and there is no consumption, so it cannot be reflected in the statement. It is recommended that the customer check it from the direction of the credit limit. Pre-authorization: freeze a certain amount of funds in the customer's credit card as a guarantee. Pre-authorization cancellation: cancel the pre-authorization on the spot when returning the car, then the bank will unfreeze it in about 7 working days, and then draw a pre-authorization as a violation deposit. If there is no violation within 30 days, the bank will automatically unfreeze it in about 30-35 working days.