Thanks for getting back to us, @Shalo.
Let me shed some light on how to issue a refund check. Looking at your process, you've created the refund check from the Credit Memo page. That said, you'll want to check the credit memo's status. You'll know if your refund did go through if the transaction status says Refunded.
Here's how to check:
- Go to Customers and then choose Customer Center.
- Scroll towards the customer's profile, and then locate the credit memo from the Transactions tab.
- Open the credit memo to see the status. See the image below.

If the credit memo has no Refunded status, click the Use credit to give refund icon to issue a customer's refund.

With the above steps, you're able to zero out the customer's available credit. For more information about issuing a customer's refund, refer to this article: Give your customer a credit or refund in QuickBooks Desktop for Windows.
About the first refund check you've created, you can delete it to avoid duplicate transactions. Just look for it from the customer's transaction file.

Additionally, here's a link that'll help you manage customer-related tasks: Sales and customers.
Please don't hesitate to swing by if you have follow-up questions or concerns with customer refunds. I'm always here for you. Take care and be safe, @Shalo.