Tata Motors — I am complaining about the delay of my booking vehicle and no response from the dealers

Address:

MADURAI KK Nagar.

As I am booked the vehicle " TATA ALTROZ XE RYTHM " as the date of "DEC 14th "in "Sri Chima Cars pvt ltd" as they are giving the estimated time delivery of 55 days but there is no update or anything as of now.(" I ordered the vehicle for the purpose of my brother's marraige that i informed to the showroom).
Eventhough i call/message to the respective executive as well as The Manager of the dealers they are not properly give any response. They didnot even pickup my call after I asked when will you deliver my ordered vehicle.I didnt expect this from a reputed company like TATA MOTORS. I am very disappointed for the time delay and mainly the irresponsibility of the dealership/showroom management.
So please I request tata motors to resolve my complaint as soon as possible.