1. Turn off automatic renewal. In the Amazon account settings page, you can select the membership plan option, and then turn off the automatic renewal function to stop membership services and avoid credit card charges.

2. Cancel the order. If you have an unshipped order on Amazon, you can try to cancel the order and apply for a refund to avoid credit card charges.

3. Contact customer service. If your payment has been deducted, you can contact Amazon customer service and explain the situation in order to apply for a refund or cancel the deduction.