To get a refund for your SuperGrok subscription billed by Apple, visit...

https://smoothdecorator.com/how-do-i-cancel-supergrok-if-settings-subscriptions-is-blank/

To get a refund for your SuperGrok subscription billed by Apple, visit reportaproblem.apple.com and sign in with your Apple ID. Navigate to iOS Subscriptions, find SuperGrok, and request a refund