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

https://remote-wiki.win/index.php/How_Do_I_Stop_SuperGrok_from_Auto-Renewing_on_iPad%3F

If Apple billed your SuperGrok subscription, you can request a refund by going to reportaproblem.apple.com and signing in with your Apple ID. Find your SuperGrok purchase under iOS Subscriptions, then choose “Report a Problem” and follow the steps