Sorry to hear this. I had an appointment for the 16th. I called on the 10th to ask some questions about payment, and they said "Hmmm, we see the 16th was scheduled, but your car is not supposed to arrive until the 23rd. We'll have to move the appointment".
I'm now scheduled for the 27th. I'm going to go to the delivery center and look for my car on the 26th(My wife was not available on 26th, or would be able to get it then), and if I find it, I will pay, otherwise I will be calling and asking where my car is at.