Honda of The Avenues

I bought a new Accord in 2012 from this dealer. Three years down the line, I wanted to sell it and pulled out the AutoCheck report. 1. The car was used, and not new, on the date of purchase 2. The car had an accident on it, prior to purchase None of this was disclosed to me, and I didn't bother to check the carfax, because they said it was new. Not only did I overpay for a used, accident car, I also am looking to take a hit in case i were to sell it. The dealer is not responding to my queries, and is trying to stall me. Please buy cars from an honest dealership, to avoid having issues like mine.