To get a refund for your SuperGrok subscription billed by Apple, visit...

https://www.bookmark-friend.win/to-cancel-grok-properly-make-sure-you-do-it-through-the-same-billing-channel

To get a refund for your SuperGrok subscription billed by Apple, visit reportaproblem.apple.com and sign in. Choose iOS Subscriptions, find SuperGrok, and select “Report a Problem” to request a refund