If Apple billed your SuperGrok subscription, head to reportaproblem.apple.com...

https://www.red-bookmarks.win/if-apple-billed-you-for-supergrok-and-you-want-a-refund-go-to

If Apple billed your SuperGrok subscription, head to reportaproblem.apple.com to request a refund. Navigate to iOS Subscriptions, find SuperGrok, and choose the issue