Hi there, @brenda0608.

In the Simple Start version, you can create a deposit to record your bank refund. The vendor credit feature is only available in the higher versions of QuickBooks Online (QBO). Here's how to create a bank deposit:

1. From the left menu, click the + New icon and select Bank deposit.
2. Enter the necessary information.
3. On the Add funds to this deposit section, select the vendor or customer.
4. Enter the Account column. (In this section, select the expense account used upon purchasing the equipment).
5. Enter the amount.
6. Verify the details, then click Save and close.

I added a screenshot for additional reference.

I recommend running the Deposit Detail report to see the list of your deposit transactions. You can also customize it to identify the information you want to highlight from there. Then, memorize it to save the changes you made. For more information, check out this article: Memorize reports in QuickBooks Online.

Please don't hesitate to comment below if you need anything else. I'll be here to help you. Stay safe out there.