Flipkart — Lenovo k5 note mobile heating issues

Address:

560034

To whomsoever it may concern
Myself Jijo Kurian ordered a Lenovo K 5 note mobile phone from FLIPKART on 3rd october .I got the mobile in my hand on 6 th October.From the starting itself Phone was heating on charging.Then after 3 days I started to use Reliance Jio 4g and playing some games.After a 20 minutes o[censored]sage my phone heated like an Iron box I can even catch in my hand also.I contacted FLIPKART customer care They told me to Factory reset your phone.I did that Yesterday. But again today This phone heated very badly and I request for a return. They r saying that their technician will call tomorrow and tomorrow is the last day of my 10 days return ploicy.What I will do..?.Can you please help me out solve this issue...?..Thank you