If Apple billed your SuperGrok subscription by mistake, visit...

https://touch-wiki.win/index.php/Where_Do_I_Go_to_Refund_a_SuperGrok_Subscription_on_iPhone%3F

If Apple billed your SuperGrok subscription by mistake, visit reportaproblem.apple.com to request a refund. Open Settings on your iPhone, tap your name, then Subscriptions to manage SuperGrok