If Apple billed your SuperGrok subscription, canceling won’t get a refund...

https://technivorz.com/what-refund-reason-should-i-pick-for-supergrok-on-apple/

If Apple billed your SuperGrok subscription, canceling won’t get a refund automatically. To request one, go to reportaproblem.apple.com, sign in, and find your purchase under iOS Subscriptions