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

https://post-wiki.win/index.php/What_Should_I_Do_If_I_Subscribed_on_Grok.com_but_Tried_to_Refund_on_Apple%3F

If Apple billed you for your SuperGrok subscription and you want a refund, visit reportaproblem.apple.com and sign in with your Apple ID. Find your SuperGrok subscription under iOS Subscriptions, then request a refund