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

https://fast-wiki.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 to request a refund. You can also check your subscription under Settings > [your name] > Subscriptions on your iPhone