Popular Maruti — Delayed delivery of vehicle.

Dear sir,
We booked ertiga at the last week of january this year for a marriage purpose. I clearly mentioned our urgency of vehicle at the time of booking. They promised me that they will deliver vehicle within 3 weeks. Now it reaches 2 month. We dont get our vehicle yet. The manager of kothamangalam branch is an irresponsible ###. They dont follow up with their higher team that is the only reason for this delay. Kindly help us in this situation.