Samsung the S6 worst phone

I have renewed and down grade my cell phone contract to the S6. From day one i started to complain about the battery life. At midday I need to recharged my phone. Taken it to service center at Brooklyn, and got a phone back that did not want to make calls, receive calls or even open any app. Took the phone back a second time and was told that they can not repair and that i have to take it to another service center.Took it to Garsfontein were they defaulted the phone. Lost all my info.Still no battery life and people can not hear me on the other end of the line. Phoned 4 times to Samsung and stil no working phone. Stay a way from S6 if you use a phone.