If Apple billed you for a SuperGrok subscription, visit...

https://fernandowehn083.timeforchangecounselling.com/if-i-delete-the-app-does-it-cancel-my-supergrok-subscription

If Apple billed you for a SuperGrok subscription, visit reportaproblem.apple.com to request a refund. Cancelling the subscription on your iOS device under Settings > Subscriptions stops future charges but doesn’t automatically refund past payments