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

https://wiki-book.win/index.php/Can_I_Request_an_Apple_Refund_from_My_Mac_Instead_of_My_iPhone%3F

To get a refund for your SuperGrok subscription billed through Apple, visit reportaproblem.apple.com and sign in with your Apple ID. Choose the iOS Subscriptions section, find SuperGrok, and request a refund