If Apple billed your 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 your SuperGrok subscription and you want a refund, go to reportaproblem.apple.com and sign in. Find SuperGrok under the iOS Subscriptions section, then select “Report a Problem” and request your refund