Mosi is usless and full of empty promises

I bought a contract with mtn. The phone broke the first day and they replaced it, I got the same phone again and the same issue happened this time they told me it would take 7 working days for them to asses the phone and replace or fix it. Two weeks later after spending many frustrating hours at mtn cresta they returned the phone as fixed. The phone broke the same day! I returned it and this whole process started again! They promised to get it fixed in three days but no such thing has happened a week and a half later Mosi is still talking the same ******* telling me to do his job and call the repair centre. I will not stand for such poor customer service the whole crew there have bad attitudes and never smile. Nothing would make me more happy then to see Mosi fired for his weak leadership skills and conduct false promises. If this is what I as a customer mean to mtn then I do not promote this company use any other network provider these guys are just out to get you. Out of the two months I've had this contract I have used the actually cellphone for around 10 days. The phone in question is the Sony experia M5 Aqua.