If Apple billed your SuperGrok subscription by mistake, visit...

https://city-wiki.win/index.php/SuperGrok_Not_Showing_in_Your_Apple_Subscriptions_List%3F_Here%27s_What_to_Do

If Apple billed your SuperGrok subscription by mistake, visit reportaproblem.apple.com to request a refund. Go to Settings > Apple ID > Subscriptions on your iOS device to manage or cancel renewals