Not sure about the Car yet, but service sucks

I saw the reviews on online portal and went to Surya Nissan , Bangalore for booking. I liked all the features. Almost comparable to Honda Amaze. July 11 , I booked the car. Colour: Turquoise Blue. Promised date of delivery was July 13 .The model was in stock. In between my loan was being processed by SBI and it took nearly two weeks. Whole amount (Including On road price, registration, insurance everything) was paid on July 27 . I was told at this time, the car got sold to somebody else who paid by cash and I will have to wait another two weeks or take another color. Note: They didn't bother to inform me, they have given my booked car to somebody else. After that, I have called them almost every week and been promised the car will arrive anytime soon. There is some manufacturing issue. Etc. etc. Today, when I checked again came to know, they still don't know when they would receive the model I had booked. In between I had received calls from CarDekho and was apprised I will be updated on September 15th. But going by the history, I don't believe I will get it anytime in next two months. I finally asked them to update me tomorrow about the latest staus or cancel it. My key pain points are 1) The dealer definitely knew there is some delay and it may take 3 months or so. They didn't inform me upfront. 2) They shouldn't have collected full payment when they knew there is going to be delay. I unnecessarily paid two months interest etc. 3) Had I waited two more months and booked now I would have got the car at a much lesser price (I didn't get a single discount because it's a new lunch) and of course peace of mind. 4) Dealer or Nissan clearly has taken me for a good ride :(