If Apple billed your SuperGrok subscription by mistake, visit...

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

If Apple billed your SuperGrok subscription by mistake, visit reportaproblem.apple.com and sign in. Go to iOS Subscriptions, find SuperGrok, and request a refund. Remember, canceling the subscription stops future charges but doesn’t refund past payments