Communication Horrible

The salesperson only cares about the cars being there after you are on your own, how do i cancel this deal? The car was bought and paid for on the 8th and it's the 20th today its hasn't been booked for transportation because you do not answer your calls. I should be receiving the car next week and I'm only being told now that Monday the 23rd is day 1. I have a job lined up that's the reason why I bought the car