bought a brand new car..doesn't have motor plan

In august 2015 I bought a brand new bmw 320i m sport from lyndhurst auto.... 3 months later the boot doesn't open sometimes and the aircon is not as strong...last week I went to melrose arch auto and they booked the car in for Thursday (10/12/2015) when I took the car in in that day I was told that my car didn't have motor plan... how can a car that I bought for over half a million not have motor plan??? To my surprise my car was sent back without being fixed.. They asked for documents which I gave them till today I haven't heard anything from bmw... bmw service is the worst... I no longer want this car and I don't want to deal with bmw again and I doubt that I will ever buy a car from bmw again... my family always bought cars from bmw and now the service is no longer the same... how do you pay the bank for a car that you are no longer happy with????? The reason y I chose bmw was the service that it gave my family over the years.. I was supposed to travel to kzn that weekend and I had to cancel because of this. I want bmw to take this car back since the motor plan is still under lyndhurst auto.. I will buy another car where I will be treated well...