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

https://www.save-bookmarks.win/if-you-want-a-refund-for-supergrok-first-double-check-who-charged-your

If you want a refund for SuperGrok, first make sure Apple actually billed you by checking your receipts or subscriptions on your iPhone. You can view and manage your iOS subscriptions under Settings > Your Name > Subscriptions