If Apple billed your SuperGrok subscription, start by visiting...

https://www.first-bookmarkings.win/if-you-want-a-refund-for-supergrok-first-double-check-who-charged-your

If Apple billed your SuperGrok subscription, start by visiting reportaproblem.apple.com to request a refund. Go to the iOS Settings app, tap your name, then Subscriptions, and find SuperGrok