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

https://technivorz.com/what-refund-reason-should-i-pick-for-supergrok-on-apple/

If Apple billed you for a SuperGrok subscription and you want a refund, go to reportaproblem.apple.com. Sign in with your Apple ID, find SuperGrok under iOS Subscriptions, and request a refund