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

https://www.bookmarkmaster.win/if-you-want-a-refund-for-supergrok-first-check-who-billed-you-sometimes

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