Motorola — Excessive heat and battery draining quickly

Sir,
I have purchased Motorola Moto G(3rd Gen)XT1550 LTE-16GB Black, IEMI No-[protected], 2nd August'15 online through Flipkart(WS Retail Services Pvt. Ltd.Invoice No : # BLR_WFLD[protected], Warehouse Address: NO. 42/1 & 43, KACHERAKANAHALLI VILLAGE, , JADIGENAHALLI HOBLI, HOSKOTE TALUK, Bangalore, Karnataka, India - 560067, Order ID: OD[protected]
Order Date:[protected]
Invoice Date:[protected]
VAT/TIN: [protected]
Service tax #: AAACW8725FSD001). But handset is delivered to me on 11 August'15.After few days later when I accessed internet specify on LTE SIM the device was excessive heat and battery was drainage automatically.I informed it to flipkart (flipkart apps) by returned item.Without any solution flipkart executive asked the problem and after that they cancelled the returning process 4 times.Last phone call I received from flipkart, the executive told me please go to the service center and check your device.after checking if your device is faulty then you will get a new one.But I informed him due to some reason I will be not available till 15th Sep'15, then he told it's ok ...don't worry I will set up next call time on that basis.But just one day later I saw my return request has been cancelled and one statement was displayed there "The issue has been resolved between you and the seller.Hence there will be no replacement or refund".simply I have given a email to flipkart that how can you cancell my return request without my knowledge ??Simply they answered you crossed the return process limit days(gurantee period).But my question was if I crossed the gurantee period then why you are not counting my previous (4 times) refund process that time you are intentionally rejected my refund request without any solution. But now service center is delayed the repair process I don't know why??As because Motorola customer care told your set is delivered in your hand 30th sep'15 but Electro Service center, S.B.Gorai road, Asansol told that they are not received mother board from the company ...So, in between this what's going on I can't understand.Though I have purchased this item with the value of Rs.13, 000, it's not a negligible amount then why should I take this faulty device...please sir look into this matter and do the needful.