Micromax q5
Within 3 days of purchase the Keypad & trackball are not working

I have purchased a Q5 ezpad phone and within three days its trackball & keypad have stopped working after that i have visited the service center where he gave me a DOA Certificate but the shopkeeper is not helping me out in the same. The shopkeeper says that it will take a month for him to replace the phone.

My mobile no:9819774036