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

https://www.cast-bookmarks.win/if-you-want-a-refund-for-supergrok-first-make-sure-apple-actually-billed

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 subscription won’t automatically give you a refund. To request one, go to reportaproblem.apple