I have purchased one P11 mobile from Khosla Electronics Salt lake on 15 th May instant but regret to say that battery of the said set is found to be defective and as such I went to your service agent Mobi care. They have sent you the requirement as they say to you but 10 days have passed I am not able to use my hand set. plz. look into the matter. As regard my self I am Arun Singh from same trade served Sharp, LG, Gorej....