The balance of Meiping dry cleaner's membership card was entered incorrectly. How to modify it?

The balance of Meiping Dry Cleaner's membership card was entered incorrectly, and it is revised as follows:

1. After recharging, find the recharging bill in the recharging bill list with the corresponding recharging bill number. It has been recharged to collect money. You need to go to the statement details of the report center to find the customer's bill number, document type: membership card recharge, and delete this bill. After deletion, the balance of the membership card will be automatically reduced.

2. Click on the list of prepaid bills managed by the front desk, find the customer's bill, and then delete it.

3. Directly operate the recharge billing and enter the negative amount of the refund.