Technicians don't want to install my DSL line

<p>I app**** for a DSL line to be installed in my house. The previous owner here had DSL for several years before he moved, so there is a phone line already in the house. I told the sales lady that this is the case, but was advised that I cannot do a self install, and that a technition needs to come out. The appointment was booked for the 13th of April 2017. After recieving numerous SMS's to confirm this date, and even replying to confirm that the 13th is still fine, Telkom decides to instead move my appointment to the 19th without confirming with me. I had to take unpaid leave to be here today, and now after speaking to numerous people from sales / technical all pushing me from pillar to post. Unfortunately for Telkom, I am employed full time and I have to apply for leave to be at my house, so i would like that Telkom sticks to the appoinment. I cannot believe how hard this is, because its litteraly only a connection at the DSLAM that needs to happen, no actual line installation. </p>