Hi there, Taiwah. Thanks for raising your concern here. 

There are two ways to remove a Payment method item, temporarily remove it from a specific transaction and permanently make it inactive. We're more than happy to guide you on how to do it.

To temporarily remove it from a specific transaction, uncheck the Online payments box beside the Customer email field.

See the screenshot below for reference:

To permanently inactivate the item, go to the Payment Methods section in the All lists tab. Here's how:

1. Go to the Gear icon, then select All lists in the LISTS column.
2. Choose the Payment Methods.
3. Besides the payment method item, click the dropdown icon below the ACTION column.
4. Pick Make inactive.
   
   

Below are articles you can use to manage your customer payments in the future:

• Record invoice payments in QuickBooks Online.
• Record a customer refund or supplier refund in Quickbooks Online.

Feel free to come back here if you have additional questions. We'll answer you as soon as we read your post. Keep safe, and have a good one!