If Apple billed your SuperGrok subscription and you want a refund, visit...

https://post-wiki.win/index.php/SuperGrok_Subscription_Shows_Active_but_I_Want_to_Stop_Renewal_and_Ask_for_a_Refund

If Apple billed your SuperGrok subscription and you want a refund, visit reportaproblem.apple.com and sign in with your Apple ID. Find SuperGrok under your iOS Subscriptions and select "Report a Problem" to request a refund