AutoNation Volkswagen Las Vegas

After working with this dealer for several weeks on the purchase of a new 2010 Jetta TDI Sportwagen, the sales manager told me he'd sell me the vehicle for $400 over invoice. The next day, after spending more than 3 hours at the dealership, the deal was done. It wasn't until the next day while I was overlooking all of the paperwork that I saw a difference of $625 more than the invoice price on the sales contract. I called the dealer and he emailed a totally new invoice for the vehicle that included advertisement costs and membership in the Las Vegas Dealership Association. I called him on it, and he claims it was the same invoice I saw at closing. No way. I asked him if my signature was on the document, to which he laughed. I asked to be reimbursed for the $625 difference and he told me to take a hike. I have yet to receive a customer satisfaction survey from VW.