Telkom not coming to install phone line

I called the call center near the end of January and ordered adsl and a telephone line. I payed my deposit the same day and notified the call center that I had done so. I got an appointment for the 6th of march for installation. They then confirmed the date and they arived at my house that day only to say they have to go to the exchange quickly they will be right back. They never came back. I then called again and then they said the technician will come back the next day(Saturday) to finish my install. Again no feedback and no one ever came. Now Im stuck without a appointment date and no internet at all. Ive escalted the issue with the call ceneter again and they said there is nothing they can do as the installation department is not answering their phones. Im really dissapointed with the service I recieved. I need the adsl for work purposes and now I can't do my work as a result.