Telkom Technician No Show

I ordered a telephone line installation 2 weeks ago and after paying for it, Telkom notified me that the technician would show up on Wednesday the 16th of September between 7:30am and 4:00pm. They even phoned me to confirm and I said I would be available. I was also told that someone would get in touch with me on the day of the appointment. The whole day went by and I didn't hear anything so I phoned the call centre who were only able to tell me that the technician would show up by 4:00pm. It's now 4:30 and I still haven't heard anything. I'm not happy with the service at all and now I'm worried that they'll book my next appointment for a further date. It's not fair to waste people's time like this, and if there was a problem getting to my place they should have gotten in touch with me. <br> Order number ***