DT Upset norfolk, Virginia

I purchased a car in 2/2012, and was having my payment automatically taking out of my saving account every 2 weeks. Because DT started to not take the payments out on time i started to pay at Wal-Mart. I missed one payment in April due to a back injury, but doubled my payment that next month, and I thought I was up to date on my payments. Until 1/13 when I went to start my car and it was gone. I called back to back to the customer service number and was ignored. When I finally got someone after of 3 hours of calling no one knew where my car was or what I was talking about until 1 day later. I had several different quotes about what I owed, but I informed them that I was looking at all of my receipts,and when they where informed about this I was told that I would recieve a call in 10 minutes, and that was last week. So i decided to try to purchase another vehicle from another company,and DT has my account open with them so I was unable to get a new car. When the other dealer tried to ask them a question about what they where going to do they told him, and me that I DID NOT have an account with them, and I gave them my social security number, and my account number and nothing. So later that day I went on the web cite to print off my payment history and now I cant log in to my account SOMEONE PLEASE HELP ME.