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

https://dallasssplendidinsight.yousher.com/i-see-supergrok-in-subscriptions-but-not-in-reportaproblem-apple-com-what-s-going-on

If Apple billed your SuperGrok subscription, you can request a refund at reportaproblem.apple.com. Just log in, go to your iOS Subscriptions, select SuperGrok, and follow the steps to report a problem