Samsung South Africa
Samsung S4 - switching off constantly

Purchased a Samsung S4 May 2013. Only started usung it June 2013. Since this morning the phone just keeps switching off. I have tried everything. Reboot, removed SD card etc... phones comes back on again, enter pin, phone stays on 10 seconds and switches off again. Nothing has helped.

I need assistance. Vodacom has no idea. I have children at home and need my phone!!!