[Resolved]  Maruti Alto Lxi — Rear door problem

I purchased Maruti alto lxi on 18th August 2009 frrom popular Vehicles, trivandrum.Now my problem is that the rear right door of the same is not properly closen, i need to push it hard from the same day itself i bought the car, but the executive said the t it is common for alto, what can i do.I can afford it.i just bought it 3 days ago.I need to solve it urgently, Mob [protected]