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

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

If Apple billed your SuperGrok subscription and you want a refund, visit reportaproblem.apple.com to request it directly. Go to the iOS Settings app, tap your name, then Subscriptions to manage or cancel