It's good to have you back here, @panaviewmanagem.
Let me share additional information on how you can refund your customer through Pay Bills in QuickBooks Online.
You may create a vendor and add one with a middle name (or initial). This way, you can pay using online pay bills.
Here's an article you can refer to on paying bills in QBO: Enter bills and record bill payments in QuickBooks Online.
Also, you can check this link about how bill pay works: Bill pay explained: How it works, benefits, and setup.
Let me know if there's anything else I can do to help. I'll be right to assist.
