If you want a refund for SuperGrok, first double-check whether Apple billed you...

https://domgodwinson38.gumroad.com/p/how-do-i-check-my-supergrok-charge-amount-in-apple-purchase-history

If you want a refund for SuperGrok, first double-check whether Apple billed you by looking at your purchase history or iOS Subscriptions. Simply canceling the subscription doesn’t get your money back. To request a refund, go to reportaproblem.apple