Manufacturing fault on device

I did my upgraded at MTN SA MIMOSA MALL BLOEMFONTEIN. on 10/04/2015.<br> The Sales consultant was very unprofessional and talked the brand Samsung down and tried to get me to buy another device. I upgraded to the samsung S6. The next day me and my client noticed a hair line crack at the back of the phone. The service provider said that I should contact Samsung regarding this matter. Long story short I have corresponding with MTN for almost 2 months now. I even have a legal representative who sent out a letter to the branch and I still have not had any correspondence up until today.<br> The device got extremely hot when the consultant activated the device and it still gets hot to this day when it is charging and in use. The do not want to replace the device and want to send it in for repairs where no one has taken the device for further investigation. MTN just pulls up their shoulders saying I physically damaged the device.<br> Why will I have a legal representative to handle my case if I damaged the device myself!!! NO ONE IS COMMUNICATING WITH ME. <br> This is not a way to treat a client who has been loyal for 15 years!!!!!!<br> <br> Hope to hear from you soon<br>