To get a refund for SuperGrok billed by Apple, visit reportaproblem.apple.com...

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

To get a refund for SuperGrok billed by Apple, visit reportaproblem.apple.com and sign in. Navigate to your iOS Subscriptions, find SuperGrok, and request a refund there