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

https://www.coast-bookmarks.win/if-apple-billed-you-for-supergrok-and-you-want-a-refund-visit-1

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