Nissan unable to deliver Terrano

I had booked a Nissan Terrano XL D Black color on 13th Nov'13 at Lakshmi Nissan Hyderabad, and was promised by the dealer to be delivered in 15-20 days. I requested them to deliver on 11th Dec'13 which they failed and did not even bother to communicate the same to me. After multiple calls to the dealer, Nissan customer  care and Mumbai sales office there is no success. The customer care takes the request and never responds back with an answer, and Mumbai sales office does not even entertain calls from customers. Nissan should learn to deal with customers and with such poor customer service before delivering the vehicle, I can imagine their after sales service capability. People who want to buy Nissan Terrano be careful while booking because Nissan has no clue about when they can deliver. It is going the Ford ecosport way and will be failure soon.