Credit card refund phone number 12378. The answer is as follows:

Credit card interest refund operation method:

1, call customer service and ask to check the bill. Some banks can find all the bills since the card was opened, and generally they can find the bills for the past year. Look at the interest generated in the past year!

2, ask for a refund, customer service will explain how these are deducted, and we will find loopholes. In short, it is to ask for a refund of interest and liquidated damages. Customer service will say apply upwards. 3. If the customer service calls back, if it refuses, you can continue to ask for a refund of interest. Special circumstances or poor communication can be properly complained until success, usually 3-7 days refund!