MTN Clearwater the worst service

I had recently decided to change network providers and went to mtn in Clearwater to take out a new contract

On the 2nd day of having the phone I noticed it being warm took it back on the 3rd day and the lady said to monitor it over the weekend. Still experiencing an issue I took it back on the Monday to be told I had to update software. While doing so I was just left to sit there, with no one explaining what the process was or checking up on the device. In fact the person who was supposed to do so walked passed me at least 5 times. I was then addressed by thr regional manager told that the device had a 6 month guarantee on anything technical and that she would personally take me to Samsung and had the device diagnosed it I still had an issue.

Come time to fill her promises she says she would not be at the branch and I should speak to a lady named Thobile, for a pop and to take the phone to Samsung and that she would make a plan for a temp phone for me. Get to the branch and thobile knows nothing about all of this, being frustrated I left the branch with the faulty device that is now heating up a lot, not understanding why am I liaising with the manager if I have to go through everything again, why was the consultant not informed of the plan of action.

I then call the regional manager Bongi only to be called a ****???

I want this phone replaced or the contract ended