If Apple billed your SuperGrok subscription, go to reportaproblem.apple.com to...

https://instaquoteapp.com/why-does-apple-make-me-request-a-refund-separately-from-canceling/

If Apple billed your SuperGrok subscription, go to reportaproblem.apple.com to request a refund. You can also check your iOS Settings under Subscriptions to manage or cancel it