I want to cancel an order
I want to cancel am order in iTunes the payment is scheduled tomorrow
iPhone 5s, iOS 7.0.6
If you mean a pre-order then see this page for how to cancel it via your computer's iTunes : http://support.apple.com/kb/HT5714
If you mean an auto-renewing subscription then there are instructions on this page for managing and stopping them : http://support.apple.com/kb/HT4098