If Apple billed you for a SuperGrok subscription and you want a refund, visit...

https://ericksexcellentblog.image-perth.org/if-i-cancel-today-will-i-still-have-access-until-the-end-of-the-period

If Apple billed you for a SuperGrok subscription and you want a refund, visit reportaproblem.apple.com to request it. Canceling the subscription in iOS settings stops future charges but doesn’t automatically refund what you’ve paid