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

https://wiki-stock.win/index.php/How_Do_I_Request_an_Apple_Refund_for_SuperGrok%3F

If Apple billed your SuperGrok subscription, you can request a refund at reportaproblem.apple.com. Go to your iOS device’s Settings, tap your Apple ID, then Subscriptions to find SuperGrok