Vodacom out of box failure

I upgraded my contract and received a Samsung S6. After a day of usage I noticed it gets so hot that I cannot hold it,and the battery lasted maximum 4 to 6 hours without using any apps or programs. <br> <br> I returned the device in 5 days to Vodashop Potchefstroom and they sent it to the technical department as an out of box failure.I returned to the branch for a follow up and the branch manager informed me that they found no fault with the phone and I have no option but to take it back and continue my contract for 2 years. <br> I informed him that I disagree and refuse to pay 2 years for a new phone that I believe is faulty, and requested to receive a different phone.He told me its not possible and simply stated:sorry, he can do nothing else for me. I asked him for advice or steps I can take to resolve the issue but he only gave me the vodacom customer care number and waved me goodbye.<br> <br> After spending hours on the phone with vodacom consultants and being referred to different numbers, and then to different departments and being placed on hold and then again winding up where I started, I still did not come into contact with anyone that can assist me. <br> <br> The poor service is shocking.