Micromax Informatics — Got used old phone in the name of replacement

Address:

Gurgaon, Haryana, 122001

I bought micromax canavas knight 2 E471, it had some problems like over heating ang hanging. I complained about it, the customer care executive said that they would replace the phone and give me a new phone. They took my new phone and gave me old used phone in the name of replacement and it too had same problem which I had in my new phone. When I complained about it they said to send the mail. I sent them mails many times but they are not replying to any of my mails. I even complaint on their site but no revert from their end. They are not reverting to my calls, mails & complaints. Kindly do the the needfull.