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

https://wiki-legion.win/index.php/I_Got_Charged_for_SuperGrok_and_I_Don%E2%80%99t_Recognize_It_%E2%80%93_What_Now%3F

If Apple billed your SuperGrok subscription, you can request a refund at reportaproblem.apple.com. Just sign in, find your purchase under iOS Subscriptions, and select "Report a Problem" to explain your issue