Worst Customer Service and Attitude

I cannot begin to express my dissatisfaction and anger at the countless days that I have been inconvenienced by MTN's pathetic service and unreliability at the East rand Mall branch in Boksburg, JHB. I had taken a contract for the Huawei G7 as they did not have stock of the Huawei P8 on numerous visits to their branch in the beginning of October and Strangely the screen crack through the heat and now they do not want to repair the phone nor do they want to sent it to a Huawei centre to get its sorted. I have spoken to Deno and four other consultants there even Ethan an IT consultant who advised they will book it in but i must pay for it but it was not my faulty the Phone is still under a warranty and yet they all give me the run around. I also spoke to a Huawei Rep and she advised me that MTN suppose to sort the problem or give me a new Phone because it within one month but no MTN Person is willing to rectify the issue. Even when I wanted to speak to the Manager, He/she is not available on three occasions. This is unacceptable, can the correct Manager/supervisor from MTN call me back regarding this issue within 24 hours and I am going to take this matter further. Thank you.