Micromax Informatics — Micromax service

I have bought micromax canvas 5 8 months ago. And everything was okay then some battery issues occurred. The battery still drains fast. And now its showing some problem in its internal circuit. I leave the mobile charging all night n till morning its not charged at all then suddenly when half of the day is over it starts charging. I have to keep my mobile at home because it take days n yeah its own mood to charge. When i went to the service centre they told me it happens its a problem in its ic and maybe everyone would have been complaining them about this. They further told me to change my whole screen due to a single crack above my camera worth 3850₹ and then the mobile would be considered under warranty. I don't even need to fix that crack but no i have to. I am very disappointed. Its an indian company and i want it to improve not just sit there and relax.