If Apple billed you for a SuperGrok subscription, visit...

https://garrettwigp625.tearosediner.net/supergrok-refund-request-what-should-i-say-in-the-comments-box

If Apple billed you for a SuperGrok subscription, visit reportaproblem.apple.com to request a refund. Cancelling the subscription on your iOS device under Settings > Subscriptions stops future charges but doesn’t automatically refund past payments