I understand how this situation affects your business tasks, @StanPik. Let me provide another way to delete a customer's credit card information in QuickBooks Online (QBO).

When processing payments in QuickBooks, adding payment information to every customer's profile is necessary. This is why the option to delete credit card info from the Payments and Billing tab isn't possible. However, you can modify the card number to prevent system charges.

Here's how:
 

1. Choose Sales in the left panel and click Customers.
2. Select the customer name, then Edit.
3. Go to the Payment and Billing tab.
4. Choose the credit card number under the Preferred payment method field.
5. On the Credit Card Information window, click Add.
6. Change the following:

• Credit card number: 4111-1111-1111-1111. This is a non-transacting test card number.
• Expiration date: Any date in the future.
  
  

For more details, kindly visit: Delete your customer’s credit card number.

Furthermore, you can visit this article to learn how to receive and record invoice payments in QuickBooks Online: Record invoice payments.

If you need additional support related to QuickBooks Payment concerns, please don't hesitate to get in touch. I’ll be around to help. Have a good one.