If Apple billed your SuperGrok subscription and you want a refund, go to...
https://smoothdecorator.com/how-do-i-cancel-supergrok-if-settings-subscriptions-is-blank/
If Apple billed your SuperGrok subscription and you want a refund, go to reportaproblem.apple.com and sign in with your Apple ID. Find SuperGrok under iOS Subscriptions, select the purchase, and request a refund