Consumer Redressal

I bought Nokia lumia 800 on 25th september 2012. And on 20th july 2013 (i.e. within warranty period), it\'s screen freezed all of a sudden and switched off and wasn\'t switching on. So i took it to the service centre and they were very careless about the issue. It was always me who approached them and they would give some baseless reasons for not getting it fixed. So after many of such senseless conversations with the manager i got my faulty lumia 800 replaced on 5th of this september, it took them complete one and half month to do so. And now my \'replaced\' phone is out of warranty and i am facing a new problem with this \'replaced\' phone too, since last two weeks. A portion of the touch screen is not working at all. I approached them on 26th dec,2013 and they still have not come up with solution.