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I would of ran far away from your sales guy. I know many of people who has gotten approved for new car loans as their first car.
Agree with Pway.
Also, car dealerships don't refinance. All they do is trade. A trade benefits the dealership and HURTS YOU.
Don't get in the habit of trading your vehicles. Even if it is paid off, it is better to sell it private party (more money to you, sometimes substantially more).
I would run from your sales rep - he would say anything (and did) to get you to buy a vehicle. He outright lied to you by saying that they "refinance". No car dealership refinances.
Salesman can be the devil. Don't believe what they say. Do your own research.