Acura of Boston

We almost reached a final agreement on a 2006 MDX but I said I need to sleep on it as to wether to pay by cash or by financing. The sales person said it was a great deal and asked me to just pay cash and p said I need to sleep on it as to wether to pay by cash or by financing. The sales person said it was a great deal and asked me to just pay cash and pick up the car tomorrow. I said "OK, take $500 off and I will pay cash today." He lost his temper, stood up and said "you are wasting my time" and just walked away from his desk. Not professional at all. Unacceptable ! Now I won't buy from them even if they take $1000 off the price. More