Apple owes me $30 from Apple Pay

This is what Apple says regarding your sentiment:

If your refund is approved, the funds are applied to the same payment method that you used to buy the item. Here's how long it takes for a refund to appear on your account or statement:

Store credit – It might take up to 48 hours to see the refund in your Apple ID balance.  

Mobile phone billing – It might take up to 60 days for the statement to show the refund. Processing time might be affected by your carrier. You can contact your carrier for an update.

All other payment methods – It might take up to 30 days for the statement to show the refund. If you don't see the refund after 30 days, contact your financial institution.

Check out more information on this article: How long refunds from the App Store or other Apple services take

And all you can do is wait even if it seems its hopeless...

You can try contacting Apple Support about the status of your refund request.

Sometimes the refunded amount takes time.