Received defective mobile but not replacement

Hi Team, I ordered Mi4i mobile and it got deliver to my address on 06/25/2015. Order Id: OD103183280320715800. On the same day i came to know that the product which i have receive is a defective product as it gets heated within one minute of usage. On the same night i requested for return the package. The product can not keep near to my ear and there is 100% chance that it can get burst any time. However i received a call from the representative, he asked me to download one app so that flipkart team can check the temperature of my mobile one line. I am very much astonished by the fact that here use of this mobile will lead to risk to my life, but still flipkart team is asking to use that device in order to check the temperature. It just like bomb I am handling in my hand. It can blast anytime. The heating level is so high which could lead to permanent hearing loss. The phone also have issue like automatic disconnection of call and screen blurriness while using. As suggested by the flipkart technical team adviser, I have updated the mobile and also did reset. however the problem is still persist. I can not use this cell phone as it get heated so badly. I would like know why flipkart give fake 30 days replacement guaranty when they do not want to provide the same. I am really frustrated and felling like suicide now a day. Please please help me get replacement from the flipkart.

Thanks