Customer satisfaction down the drain!!

I upgraded on 7/5/2015 from a galaxy s4 to a galaxy s6 edge, on 29/6/2015 I sent my phone for repairs for not having signal and it was sent in again on the 27/07/2015 and when i recieved my phone back my screen was cracked an rear casing, from all the repairs on the 11/12/2015 my software crashed and still had no signal after repairs on the 30/12/2015 I went to samsung directly for the non signal and screen,rear casing I had to use my adh to repair my screen and rear casing but still rear casing is still cracked, on the 2/1/2016 i sent my phone in again for repairs yet its still not repaired. They have promised me a new phone they promised to contact me yet still no feedback or response and I'm loosing work because I dont have an operating phone!! So I sugest samsung comes up with solutions. I have the full history I even have proof of the emails I sent them Karabo at sumsung said they would come and collect my phone and investigate yet no one has come. Now I'm completely disgusted and if I dont recieve a new phone before month end I'll make their name bad on every social media ever known!!! I'll make sure your product gets a bad name!!!