I need how to proceed in chennai police?

I lost my iphone 5 yesterday in office its was under office control so the office is need to take the blame now what i want to do to get my iphone back or how to ask from company but they telling we're not responsible they telling me do what you can? So give me an idea if i gave police compliant what they do what is the process will the police give any copies for my compliant and when they will give

An interesting read on tamils http://jayanpsk.wordpress.com/2013/07/16/north-indians-vs-south-indians/