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

https://yenkee-wiki.win/index.php/What_If_SuperGrok_Isn%27t_Listed_Under_Subscriptions_but_I_Was_Charged%3F

If Apple billed your SuperGrok subscription and you want a refund, visit reportaproblem.apple.com and sign in with your Apple ID. Find SuperGrok under iOS Subscriptions and request a refund there