Disappointing service

I had ordered a car in October & wanted it to arrive in November on my birthday but was Told there was only 1 that was Being made that matched what i wanted and that it was going to arrive on the 15th of December. To cut a long story short I did not receive my car & when I asked the dealer who was helping he told me he decided to book me a car for next year March which I would most definitely have to pay higher because their prices were going up otherwise there's another almost similar car with slightly different features and more expensive. Besides that, there's nothing he could do. I am very disappointed with the service, firstly because this is a big brand &washoping for a better service &attitude given the above. 2) if now I am get my car next year &boat extra for it I think I deserve to be contacted as the customer &given an opportunity to decide on this& not have someone decide that the car I'd said I'd take on the 15th of December is suddenly not the one 3) communication! I tried contacting this guy following up on the above & he told me he'd call me back which he never did. I really hope my complaint will be dealt with accordingly because really I am very disappointed with this dealership