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

https://high-wiki.win/index.php/I_Can%E2%80%99t_See_the_Cancel_Button_for_SuperGrok_in_Subscriptions:_What_to_Do

If Apple billed you for your SuperGrok subscription, you can request a refund by visiting reportaproblem.apple.com. Go to the iOS Subscriptions section, find SuperGrok, and select the refund option