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

https://www.fastbookmarks.win/if-apple-charged-you-for-a-supergrok-subscription-and-you-want-a-refund-visit-1

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