A customer accidentally sent an EFT payment twice for the same 3 invoices. The duplicate payment was sent back to the customer through the bank. How to record this in QB?

Hi yellowpointenerg, 

It's essential you're recording your transactions the right way so you can prevent errors in your books. I'll be glad to steer you in the right direction with this

To ensure accuracy in your books, I recommend contacting an accounting professional to get more info on recording the expense transaction. Doing this will help prevent any future discrepancies in your books. You can also reach out to accounting professionals on our site using this link here.

I'll also leave this question here so other accounting professional members can chime in. Let me know if you have other questions. I'm here to help.