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

https://messiahssplendidjournals.lowescouponn.com/supergrok-refund-request-keeps-spinning-how-do-i-fix-it

If Apple billed your SuperGrok subscription, head to reportaproblem.apple.com to request a refund. Navigate to iOS Subscriptions, find SuperGrok, and choose the issue