Samsung — display problem in mobile phone

Address:

New Delhi, Delhi

sir i have purchase a mobile in 26 oct 2013, on 2nd day the mobile dispay not working properly regarding this problem i m visit sumsung service centre 3 times, but my mobile problem still same for that issue i request the service centre manager (Mr.retish)to replace my handset, after 3rd time when i m visit the service centre but manager say its not our policy to replace the mobile phone because it is warranty not guaranty . so please help me for that.