Dell India — DELL denied replacement as system not working after 35 days of purchase date

I request you to plz don't purchase any Dell product,
1) After 28 days of purchase now it is not getting started from last 10 days.
2) It's battery backup is too low only 1.5hrs only you need to take charger every time with you.
3) After 15-16 days later of purchase system got automatically switched off 2-3 times while running the app on it.
4) System gets hang when I will runs or starts the java application on it.
When I called to DELL it is not providing any replacement they refused also its service team saying need to replace the motherboard which have no future assurance. I have also mailed to them but service is not good waiting from last 10 days but did not get any help