Nexa — Delay delivery of maruti suzuki baleno

Address:

Kamrup Metropolitan, Assam, 781025

I, booked Maruti Suzuki Baleno Zeta(p) Blue Ray on 06/Nov/2015 at NEXA Bimal Guwahati.
At time of booking the dealer told the waiting period was 2 months.I was in regular touch with the Relationship Manager (Santanu Sarma) ph.-[protected] and he promised me to deliver the car in January but he made false promises. And now when I was asked him the confirmation date he was unable to say anything but he made even worst when he told me to change the colour and variant also. Then I compromised and changed colour (silver) but still he didn't give any update.Now he doesn't receive my call.
I don't understand what kind of RM he is.How can he force to change the customer choice.
I request Maruti Suzuki to look into the matter and deliver my car as soon as possible.