To get a refund for your SuperGrok subscription billed by Apple, visit...

https://mill-wiki.win/index.php/SuperGrok_Refund_Request:_What_Should_I_Say_in_the_Comments_Box%3F

To get a refund for your SuperGrok subscription billed by Apple, visit reportaproblem.apple.com and sign in. Choose iOS Subscriptions, find SuperGrok, and select “Report a Problem” to request a refund