Land line out of order for 4 weeks +

My landline has been out of order since the beginning of December 2015. I have reported it twice telephonically, as well as gone into the local branch twice. Telkom agrees that there is a fault on the line, however, I receive frequent SMS's informing me that my service has been restored. At one stage, I was told that it was impossible for a new fault to be logged as the technician had signed off the job as being completed. The only way forward would be to speak to a manager, but his line was engaged and he would phone me back... That was four days ago. I have received no response and we are still without a landline.