MTN does not care 40 emails countless visits

I purchased a sony experia from MTN as advertised as waterproof, kept to the manufactures guidelines regarding the usage but it still failed on my first usage in water. MTN has done nothing to assist Jay Govendor head of executive complaints has sent me the same ******* email copy and paste type stuff countless times, with out any clear answers. I finally found a lady in Cape Town at a mega store that I sent these emails too, and she agreed that the head of executive help desk responses where pathetic. She said she would personally look into this as she knows Jay, but to no avail 5 visits numerous emails and nothing is happening, this has been ongoing for 6 months plus, now the last 2 with Shihaam Jakoet at the store who has done nothing. It is shocking how they do not even respond to emails, you cannot call them as they do not list a number I believe this is on purpose. Who next maybe a senior exec at MTN anyone know somebody at MTN who help loads as there customer care center from most senior to base level are useless.