Consumer Redressal

I am having Iball Andi 4.5q mobile from 6 months. It starts heating up very badly when using internet for 8-10 minutes or more. This is 3rd time i have to visit Iball support service centre, first 2 times for On off lock key, now for heating up problem. I had given my mobile at Service centre 05th April, they told me that it will take 25days as there is problem in Motherboard. On asking reason why these much days, they said they have not having motherboard in Stock. I approaching company since a week but not accurate answer receiving. They are giving nos. of different persons to contact but nos always shows user busy status. When it\'s heatup very badly, we afraid of Any blast can happen in Mobile and it also results in our productivity loss due to this problem.