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

https://oscar-wiki.win/index.php/SuperGrok_Refund:_Should_I_Contact_Apple_Support_or_Use_the_Website%3F

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