Didn't pitch

I called Telkom end of June to install a line, I confirmed their date and made sure to be at home during this time. The arrangement was for the morning 3 July. They did not pitch up, I waited the entire day for them. I called them midday and the rest of the day and they did not answer the phone like any other time I have tried calling. I still want a line installed and still cannot get hold of Telkom.