If Apple charged you for a SuperGrok subscription, go to...

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

If Apple charged you for a SuperGrok subscription, go to reportaproblem.apple.com to request a refund. You can also check or cancel your subscription via Settings > [your name] > Subscriptions on your iPhone