If Apple charged you for a SuperGrok subscription by mistake, visit...

https://blogfreely.net/samuel-wang09/i-used-a-family-members-apple-id-for-supergrok-how-do-i-refund-it

If Apple charged you for a SuperGrok subscription by mistake, visit reportaproblem.apple.com to request a refund. On your iOS device, go to Settings, tap your Apple ID, then Subscriptions to double-check or cancel