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

https://papa-wiki.win/index.php/SuperGrok_and_Grok_Are_Confusing_Me_%E2%80%93_What_Am_I_Actually_Subscribed_To%3F

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