If Apple billed your SuperGrok subscription by mistake, visit...

https://sticky-wiki.win/index.php/I_Subscribed_on_Grok.com_%E2%80%93_Can_Apple_Refund_Me%3F

If Apple billed your SuperGrok subscription by mistake, visit reportaproblem.apple.com to request a refund directly from Apple. You can also check your iOS device under Settings > your name > Subscriptions to manage or cancel it