If Apple billed your SuperGrok subscription, go to reportaproblem.apple.com and...

https://wiki-velo.win/index.php/How_Do_I_Switch_Apple_IDs_to_Find_the_SuperGrok_Purchase%3F

If Apple billed your SuperGrok subscription, go to reportaproblem.apple.com and sign in with your Apple ID. Select iOS Subscriptions, find SuperGrok, and request a refund