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

https://www.bookmarkidea.win/to-cancel-grok-correctly-you-need-to-do-it-through-the-same-channel-you

If Apple billed your SuperGrok subscription and you want a refund, visit reportaproblem.apple.com and sign in. Choose iOS Subscriptions, find SuperGrok, and request a refund from there