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

https://smoothdecorator.com/how-do-i-cancel-supergrok-if-settings-subscriptions-is-blank/

If Apple billed your SuperGrok subscription, you can request a refund at reportaproblem.apple.com. Just sign in, find your purchase under iOS Subscriptions, and select "Report a Problem" to explain your issue