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

https://star-wiki.win/index.php/Should_I_Use_Safari_or_Chrome_for_Apple%27s_Refund_Portal%3F

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