How do I refund an old purchase?

you may be able to sign in at reportaproblem.apple.com and request a refund there.

these resources may further help answer questions about Apple billing also

If you see 'apple.com/bill' on your billing statement

https://support.apple.com/en-us/HT201382

How to cancel a subscription from Apple

https://support.apple.com/en-us/HT202039

Hoxiii Said:

"How do I refund an old purchase?: Whenever I try to request a refund it only shows recent purchases not old ones does that mean that I can’t do it at all?"

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Contact Apple Support:

Ask the Apple Rep on the phone to look into this. If desired, perform a screensharing session with them, so that they can see this firsthand from yourperspective.

Apple Support Contact Info:

• Contact Us - Choose Locations
• Proceed from there as necessary

Note: Phone calls are taking a bit to go through at the moment, due to lots of calls. With the Coronavirus Pandemic, many are at home at the moment, with much time on their hands to contact Apple. So, just stay on the line, and you will get through :)