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

https://www.echobookmarks.win/to-cancel-grok-properly-make-sure-you-do-it-through-the-same-billing-channel

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