Otis Elevator Co India Limited

I ordered two elevators of otis company in the month of November 2012 and also paid the amount 15% and in the month of February paid 75%. The material was shipped to my site about one month back. Since then there is no assistance to install. I contacted the incharge Murali Krishna but there is no response from him. Hence I decided for cancellation of my order and please repay my amount back at an early date.
sd/- K.Lakshmi Narayana, Apoorva Builders and developers, Kurnool.