You do NOT have a completed order until you receive you're confirmation email. That's why they send them out.
We had this happen when I ordered my original iPhone 4. I learned the hard way. Even if you go to their site with your number. If it says in process that's meaningless. It can sit in that stage for a long time then get cancelled out.
So stay vigilant. You've got to have the confirmation email. Then you know your order is complete and moving through the system so you get a phone.