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

https://riversinterestingthoughtss.wpsuo.com/how-long-does-apple-take-to-respond-to-a-refund-request

If Apple billed your SuperGrok subscription, visit reportaproblem.apple.com to request a refund. Go to the iOS Subscriptions section to find your purchase and submit your refund reason