To get a refund for SuperGrok billed through Apple, go to...

https://www.romeo-bookmarks.win/if-you-want-a-refund-for-supergrok-first-double-check-who-charged

To get a refund for SuperGrok billed through Apple, go to reportaproblem.apple.com and sign in with your Apple ID. Navigate to iOS Subscriptions, find SuperGrok, and request a refund