Technicians did not show up to install line

I went to the Telkom store in Sea Point and ordered a telephone line to be installed. I received an SMS with installation date - 17 November 2015. I organised it so that I could work at home that day to be available for the installation. <br> <br> I never received a phone call and they didn't show up! I went to the same Telkom store that day to check if they were still coming and they were completely unhelpful...they were unable to give me a number to call or confirm whether they were going to arrive that day. <br> <br> Since that I have not heard a single thing. No-one has contacted me and I sent an email and responded to their customer service SMS to no avail. I wouldn't dare call them because one often stays on the line for up to 6 hours! <br> <br> This is a pathetic excuse for customer service. I honestly wish I didn't have to use Telkom but they need to install my line. How on earth can I make this happen??