If Apple billed your SuperGrok subscription and you want a refund, visit...

https://www.4shared.com/office/3rwv2w8_ge/pdf-73301-13539.html

If Apple billed your SuperGrok subscription and you want a refund, visit reportaproblem.apple.com. Sign in and choose your purchase under iOS Subscriptions. Keep in mind, canceling the subscription stops future charges but doesn’t refund past payments