F-C Ford Mercury

I began negotiations on a 2013 Ford Focus ST on Friday November 22, 2013. I stated that I would need to bring my wife in the following morning. The salesman, [redacted], texted me in the morning stating another couple was coming in to look at the vehicle at some point. We got to the dealer, drove the car, and began going over financing. Everything was going good. Apparently at the point they ran my credit, the other couple came in. they then fed me a bunch of lines of why it was taking so long to get the finance details. The bank is running slow, etc.. The sales manager then tried to get us to leave by stating the deal just isn't going to be what i'm looking for. This process went on for a good 45 minutes. I finally got them to give me the paperwork and stated i'll take it. They then told me that they actually sold the car to another couple 10 minutes ago. This is highly unethical and they hit my credit rating for absolutely no reason, knowing the car was already sold.