Business landline out of order for 1 month!

We are a small business and our landline has been not working since early December 2015 which severely impacts our service to our clients. We've been logging calls and Telkom has undertaken on numerous occasions to send out a technician, WE ARE STILL WAITING.<br> <br> Telkom has even stopped providing us with reference numbers when logging calls. One technician called us back in January just to inform us that he is on leave till 18 January 2016 and that he is the only one that services our area. HOW IS THAT POSSIBLE.<br> <br> What more must we do!