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

https://wiki-spirit.win/index.php/How_Long_Does_Apple_Take_to_Respond_to_a_Refund_Request%3F

If Apple billed your SuperGrok subscription, you can request a refund at reportaproblem.apple.com. Navigate to iOS Subscriptions, find SuperGrok, and select "Report a Problem