Extremely poor customer service left me feeling us...

Extremely poor customer service left me feeling used.
I contacted the dealer about coming to test drive a used vehicle. I was driving from a few hours away so we were discussing when would be a good time for me to come in. The car had been on the lot for several months so I was encouraged that it could wait until the weekend. I was told that they would call me should anyone express interest in it and I could pay a nonrefunable holding fee to ensure that it would still be available on Saturday. As I arrived to the dealer on Saturday, I found an older couple discussing purchasing the vehicle with the salesman. I was not notified that someone else was interested in it. The salesman clarified my offer and told me to wait outside with the car. About 30 minutes later I was then told by the manager that the older couple was there first and was going to purchase the car and there was absolutely nothing I could do about it. I'm almost positive that I was used as leverage to seal the deal on someone else purchasing the car. I wasted a whole day of driving just to be used as bait. I can't believe they would treat their customers this way. I will never recommend purchasing a vehicle from them.
...Emphasis on the part that stated that I was told that I would be called should anyone express interest in it and I could then pay a nonrefunable holding fee to ensure that it would still be available