Hi crazy horse lady,

You can run the Invoice List report to show the unpaid and paid invoices. This way, you can identify and delete those duplicate payments. Let me guide you how.

1. Click Reports on the left menu.
2. In the search field, type Invoice List.
3. Under Report period, click the drop-down arrow and select the date. 
4. Click Customize.
5. Click Rows/Columns.
6. Click Change columns.
7. Tick the A/R Paid and Account box.
8. Click Run report.

However, if you still need to contact our support team. Here how to reach them:

1. Sign into your account. 
2. Click Help on the upper-right corner.
3. Click Contact us.
4. Type your concern.
5. Click Let's talk.
6. Select Get a callback.

I have included this Help Articles in case you have other questions about QuickBooks Online (QBO).

Fill me in if you need further assistance. I'm always right here to help.