Hewlett Volkswagen

I bought a Demo 2013 Volkswagen Passat with 5,400 miles. It was sold as a new car. My car has a 35,000mile/3 year warranty. I was told that my warranty would start at 12 miles, not the 5,400 miles that were already on the car. (This was after already agreeing on a negotiated price and just going through the paperwork). I explained that I had bought an '08 Jetta Demo with 3,000 miles and that my warranty picked up at the 3,000 mile mark. Hewlett told me that "special rule" ended in '09. (I bought my car in '09). Hewlett said it was out of their control, so I explained I would be contacting Volkswagen America to resolve the warranty issue. I contacted Volkswagen America and they said it was up to each individual franchise dealership whether or not to start the warranty at zero mils or at the miles driven off the lot by the new owner. I also found out through Volkswagen America that my warranty began October of 2012, not September, 2013, when I bought the car. I was not explained this when signing papers. That date is on my papers and I know it is my fault, but I was trusting the salesman when he told me this says "........", sign here. Bottom line, Hewlett could have and should have started my warranty at 5,400 miles and at Sep., 2013. I could go out right now and buy a certified used Volkswagen with low miles and be given an additional 20,000 mile warranty. It does not make sense they would not make this adjustment on the warranty. They lied about the "special rule," as they could have started my warranty at 5,400 miles and they were not up front about my warranty starting in 2012, instead of 2013.