M'Lady Nissan

Went to this dealership to get a price on a new 09 Maxima. I had already received quotes from other dealers. They beat the other prices , but part of what I was negotiating was an extended warranty. I asked for a Nissan bumper to bumper zero deductible warranty for a specific price, and they finally agreed. Once we were in the finance office signing the paperwork, they tried to switch the warranty to a much lower grade warranty, then tried to include a deductible. I declined and told them to cancel the deal, they then upgraded the warranty and told me it was the best that Nissan offered. When they gave me the warranty contract to sign, I noticed what appeared to be a better warranty, the preferred plan vs the gold, I had previously purchased an 07 Altima from another dealer that I was trading in, and had also purchased an extended warranty on that vehicle and the preferred sounded familiar, so I asked for that warranty. I was told that the preferred was a maintenance plan and not a warranty, I then asked for a brochure so I could compare them, and they said they didnt have any, that they usually did not sell Nissan warranties, but the finance manager assured me that I was getting the best warranty, so I went ahead with the purchase. It was close to closing time so by the time I got home the dealership was closed, but I pulled out my paperwork for my Altima, and sure enough the preferred was a more comprehensive warranty, and NOT a maintenance plan. I called the dealership first thing the next morning and spoke with the finance manager, he said he didnt realize the difference and would correct the warranty and send me a copy of the correction. Well several phone calls and 2 weeks later, I never received the corrected warranty, and the dealership wants $380 to make the changes, even though they lied about the warranty. Do not trust this dealership.