Carvana complaint: Extremely Bad Service

This is the second vehicle I have purchased from Carvana. The first one, a Jeep Cherokee Latitude, went smoothly with no problems, no complaints. So, when I decided to upgrade, trade the car previously purchased from Carvana and purchase another vehicle from Carvana. I went back to Carvana…big mistake.
First of all, the delivery date, August 25 was pushed back August 28 because I was told that the delivery vehicle had a flat tire and couldn’t bring the car and pick mine up. So the date was moved to Saturday, August 28. The delivery truck arrived on August 28, but now the car would not crank. So the car was taken back and I was told I would receive the car on Monday August 30. I was then told that the purchased car would have to be driven to my home and the driver would then drive my car back to Carvana. Ok, I then received another call from Carvana informing me that it would not be possible for me to receive the car on Monday because the car has to be taken to the dealership to find out why it would not crank and what else is wrong.
I have printed and signed the purchase agreement 4 times, my car that I am trading is sitting in my yard and I can’t drive it because I don’t want to add more miles on it, and meantime I don’t have the car that I purchased from Carvana. I took the initiative to finance the new car on my own and paid the entire selling price already, I have purchased Car Shield for the new car, I have taken out full coverage insurance for the new car, but I still have nothing to show for it.
And to add insult to injury, this is the second car I a have purchased from Carvana because I trusted you.