If Apple billed your SuperGrok subscription, you can request a refund at...

https://titusssplendidperspective.almoheet-travel.com/what-refund-reason-should-i-pick-for-supergrok-on-apple

If Apple billed your SuperGrok subscription, you can request a refund at reportaproblem.apple.com. Go to your iOS Settings, tap your Apple ID, then Subscriptions, find SuperGrok, and select "Report a Problem