Melio removed money from bank account to process payment and the payment was returned to us by the company we were paying. How do I put money back in bank?

I got you, Terri Clemmo.

You can void the bill payment so Melio will be notified that it's a returned fund. Here's how to void and online bill payment created via online bill payment. 

1. Go to the Expenses menu and Expenses.
2. Select Pay Bills Online and then the Payments tab.
3. Find the payment that you want, then select Track Status.
4. Select Void.
5. Select the void request type: Remit funds back to my bank account or Reissue a new payment to the vendor.
6. Enter your void request reason.
7. Select Submit Request.

On the Expenses page, the status will now show Voided.

I'd also like to add this reference to give you more details about the payment schedule and funding time of Online Bill Pay: Learn how to schedule payments in Online Bill Pay in QuickBooks Online.

Keep me posted if you have follow-up questions with QuickBooks. I'm always glad to help you.