NOT delivering the product ordered more than a month ago

Location/place: Pune

Name of company/service: Timtara.com

Sir, I have ordered Samsung Galaxy Grand Duos phone from timtara.com on 27th of feb having order no. 10401548. since then they haven’t shipped the product. even they don’t answer the calls for support or any mail sent to them on their customer care email id.
Please help..