Telkom ridiculous poor service

I app**** for an ADSL line. Telkom assures me that it will take plus minus 14 days to install. They come and dig an unsightly hole in my yard but does nothing else. First follow up call takes just under an hour before they pick up. They double check all my personal details: my ID number, my physical address, my cellphone number. They assure me that they will be installing before the end of the week. Nothing happens. Next Monday morning, I call again. They take down all my personal details again. Now she tells me that the technicians went out to install it but could not find me. They went looking for my physical address where I resided 7 years ago. They supposedly tried to call me but could not reach me, after confirming my phone number how many times. I have also had two other lines installed at new addresses since the old one she is now referring to!!! I ask to speak to the supervisor but is told, after having to stay on the line again, that since he is also taking calls, I cannot speak to him and she is oh so sorry, but their system is off line and she cannot tell me what is actually happening. I am thoroughly disgusted. I have had to make use of Telkom through all my 40 years of running a big business, a self catering venue and in my private capacity and I have yet to experience any form of customer service! I do not expect them to respond but I do think it is a disgrace that we have to put up with this.