If Apple billed you for SuperGrok and you want a refund, visit...

https://www.start-bookmarks.win/to-get-a-refund-for-supergrok-billed-through-apple-go-to

If Apple billed you for SuperGrok and you want a refund, visit reportaproblem.apple.com to request it directly. Remember, just canceling your subscription in iOS Settings > Subscriptions won't issue a refund automatically