If you want a refund for SuperGrok, first make sure Apple actually billed you...

https://city-wiki.win/index.php/How_Do_I_Use_Reportaproblem.apple.com_for_a_Subscription_Refund%3F

If you want a refund for SuperGrok, first make sure Apple actually billed you by checking your purchase history or iOS Subscriptions. Remember, canceling won’t give you a refund automatically. To request one, go to reportaproblem.apple