Telkom dont care

Last year i apply for a mobile phone contract 2017, they need proof of resident that i did provide. Up on receiving my first invoice, i notes incorrect adress. It been more than 6 month that i have try to get it corrected. Every month they promise next month it will be corrected. I have exshausted all form of avalable communication with telkom (e-mail, chat room, telephone call, telkom mobile shop- cape gate mall) all of this have failed. There is no customer in telkom, i am thinking of getting legal export sorting this out. If no assisted is urgently recieve from telkom.