Faulty Samsung S6 Edge

I have upgraded my Vodacom contract to S6 Edge. I started to realize the phone had signal or reception problems and extremely poor battery life. After logging the fault on numerous occasions I finally received a new phone when they approved OBF. The new phone they provided me has the exact same problems. It has been through to the vodacom repair centre twice already with no improvement. I wish Samsung realizes that there is a major problem with these phones and cannot let these problems persist in the market . I am now paying over R1000 p/m but have resorted to my old S4. Please can Samsung issue me with a new phone that works or work with Vodacom to fix these relentless issues that customers are faced with.