If Apple billed your SuperGrok subscription, you’ll need to request a refund...

https://www.a1bookmarks.win/if-you-want-a-refund-for-supergrok-first-make-sure-apple-actually-billed-you

If Apple billed your SuperGrok subscription, you’ll need to request a refund through reportaproblem.apple.com. Just sign in, go to the iOS Subscriptions section, find SuperGrok, and follow the steps to report the issue