I'd gladly assist you with recording your bank deposit and linking the Vendor Credit and Bank Deposit, Timothy.

As for the doubling of vendor credit, it's possible that the vendor credit and the refund deposit are not linked correctly, and another vendor credit was entered more than once. To rectify this, run the Vendor Balance Detail to know which vendor credit will be deleted.  

Here's how:

1. Go to the Reports menu, then open Vendor Balance Detail.
2. Click the amount to verify which vendor credit is correct.
3. It will route you to the Vendor Credit window. If it is incorrect click More and then Delete.

After running the Vendor Balance Detail Report, find the recorded Bank Deposit for the vendor refund. Then, ensure that it's associated with the correct vendor and is posted
to Accounts Payable.



Once done, link the Vendor Credit and Bank Deposit. I'll show you how the steps below.

1. Go to + New button and click Check.
2. Choose the vendor Payee from the dropdown ▼.
3. Select the Bank Account to use.
4. On the right sidebar, an Add to Check pop-up will appear. Click Add, then hit Save and Close.
   
   

If you need to manage your business expenses record, you can refer to this article: Enter and manage bills and bill payments in QuickBooks Online.

Feel free to leave a comment on this thread if you have more concerns about vendor credit. We're always here to help you.