Hello, hello, car rental uses pre-authorization to pay the deposit and freeze a certain amount of funds in the customer's credit card as a guarantee. After returning the car, the bank will automatically unfreeze it, and the time varies according to the bank. If your credit card limit is insufficient, you can choose to use two credit cards to obtain pre-authorization, or you can choose to pay in cash or debit card. I hope I can help you, thank you!