Non delivery and dishonesty

I ordered a Telkom Adsl package. The technician was due to install my router today (18 January 2016). I arranged to be called before they come out since I work 20km from my flat. They never called and just showed up at the front of the property (my flat is at the back). My landlord asked them to go around so that she can open up the flat for the installation. They just left. I called the call centre but no feedback from the technicians. The job reference number is ***3 and order number is ***.