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

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

If Apple billed you for a SuperGrok subscription and you want a refund, visit reportaproblem.apple.com to request it directly. Canceling in your iOS Subscriptions settings stops future charges but doesn’t refund past payments