How to modify the short message time of postal credit card repayment?

The repayment date of postal credit card cannot be changed.

When handling a credit card, the billing date is specified, and the repayment date is determined by the billing date. Under normal circumstances, postal credit cards are interest-free 20 days after the bill date, so the final repayment date is 20 days after the bill date.

You can call the customer service telephone number 95580 of the Postal Savings Credit Card Center for consultation.