If Apple billed your SuperGrok subscription, you’ll need to request a refund...

https://garrettwigp625.tearosediner.net/what-does-report-a-problem-do-on-apple-purchases

If Apple billed your SuperGrok subscription, you’ll need to request a refund through reportaproblem.apple.com. Just sign in, go to the iOS Subscriptions section, find SuperGrok, and follow the steps to report the issue