Carvana complaint: Trouble purchasing

I was told to send extra documents for a better calculation and I was qualified for the car. I was told I was done with the purchase. After I was told I had checked the purchase status but it said “expired”. Why is it expired when I was told I purchased the car? I called to see what happened and they said I didn’t qualify for the car and I don’t make enough. But I was told I had purchased the car and I was more than enough qualified for the car. All of a sudden all the terms had doubled. It was a 2013 Volkswagen gti with 60,000 miles at 17% apr, 72 months, 2,600 Down payment. Now all of a sudden everything changed to 27% apr, 72 months, 5,900 down payment. I’m just getting the run around and been told it’s technical issues. I’ve talked to 3 people already and 2 said I qualified and other just gave me the run around. I’m tired of being thrown around like a ball for this purchase. I though it was supposed to be a easy simple purchase but these employees are making it VERY difficult!!