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

https://travispyuj085.raidersfanteamshop.com/why-is-supergrok-not-showing-in-my-apple-subscriptions-list

If Apple billed your SuperGrok subscription, you can request a refund at reportaproblem.apple.com. Go to your iOS Settings, tap your name, then Subscriptions, and find SuperGrok. Remember, canceling stops future charges but doesn’t refund past payments