If Apple billed your SuperGrok subscription, you can request a refund at...

https://www.bookmark-help.win/if-apple-billed-your-supergrok-subscription-and-you-want-a-refund-go-to

If Apple billed your SuperGrok subscription, you can request a refund at reportaproblem.apple.com by selecting your purchase under iOS Subscriptions. Remember, canceling your subscription does not automatically issue a refund