I've got the steps you need in reversing charges, @jlrrv.

We can conveniently process refunds in QuickBooks Online (QBO). 

Let's create a bank deposit affecting the expense account you use for the fee if you want to reverse the charge. Here how:

1. Go to the New button.
2. Under the Other column, choose Bank deposit. 
3. From The Add funds to this deposit, go to the Account field. 
4. Then, select an Expense account. (It's significant to select an Expense account to offset the charges.)
5. Enter the necessary information.
6. Click, Save and close.

However, if you referring to your customers' needing the reverse chargers, browse this article: Record a customer refund in QuickBooks Online. 

I'll also add this article about pulling up financial reports: Run reports in QuickBooks Online.

Let me know if you have more questions about processing refunds in QBO. I'm always here to assist you.