Bad customer service

In May I purchased a car at this dealership and the sales person responsible was downright slick, he was so convincing I thought I was going to get the best customer service anyone can ever as for but instead I got the worst. After asking nicely, with a friendly remark, \I hope you are not chasing sales and commission"response from the sale person \""One thing I like is the fact that you are getting the best deal from a world renown dealership and if I was chasing sales or commission I would not be talking to you"