Absolutely disgusted

In March 2015 I bought a vehicle from McCarthy Nissan in Gateway, I bought a 2008 Hyundai Tucson, I looked at the vehicle and loved it but after thinking about I decided not to take the vehicle however the saws man and sales manager told me they would give me an extended warranty policy on the car and that should anything happen this policy would cover the vehicle for a period of 2 years. This was fine and on that I decided to take the car. Yesterday my car died so went back to McCarthy Nissan Gateway only to be turned away and sent to Hyundai, the quote was done and we submitted the claim the the policy for the extended warranty only now to be told that the claim was rejected due to not having a service history which I never got when I bought the vehicle. I then went back to McCarthy and asked to speak to the dealer principle who was not there and was told he can only see me on Monday which does not help me as I have business meeting to be at on Friday in Johannesburg and I have no car. I asked them to give me a courtesy vehicle only to be told sorry they can't help me!!! I am appalled that NO-ONE is willing to help when their salesman, sales manager and FNI lady have *****ed up