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

https://fair-wiki.win/index.php/How_Do_I_Check_SuperGrok_Subscription_Status_on_iPad%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 the app doesn’t automatically mean you’ll get your money back