Alchemist Infra Realty — Refund problem after even maturity date is over

Address:

REGD. OFFICE:723, DLF TOWER 'A', JASOLA, DISTRICT CENTRE, NEW DELHI

I have taken this fund on April 20 /2011
From alchemist infra reality limited and my maturity date was on 30 March 2017 . Till now I haven't got any amount neither there is any information about my money, there is no information about company, no website to ask for query. The address of the company is also wrong, how to get in connected with company, there is also no contact number, the company is close in my native place, company agents are neither listening nor taking any action, I literally fed up, please take necessary action.. So now please guide me what to do next...