Nissan Motors — Complaint regarding Neo Nissan customer service

Attached are my details and booking form.
I have been chasing the person who has done booking for my car and in response I was always informed that delivery of cars is smooth and I will get my car delivery before time. As per his conformation I sold my old car as well. I called your employee in the march last week he asked me to wait for 5th April he will get the allocation details and will get back to me.
However he did not thus I called on 6th he confirmed my name is not there in the allocation. He gave me his GM number Anand Jha, First he didn't answer my call but later when we spoke he said he will call me back in 2-3 days but it's been a while now and he is not even answering my calls.
I want to complaint about poor customer service and delay in delivery of car.

You can connect at [protected]. I would really appreciate if someone calls in and atleast talk to me.