If Apple billed your SuperGrok subscription by mistake, visit...

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

If Apple billed your SuperGrok subscription by mistake, visit reportaproblem.apple.com to request a refund. Navigate to your iOS Subscriptions in Settings to find SuperGrok, but note that canceling the subscription does not automatically issue a refund