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

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

If Apple billed your SuperGrok subscription and you want a refund, visit reportaproblem.apple.com and sign in. Look under iOS Subscriptions, find SuperGrok, and request a refund there