Installation

I bought a Dstv with installation on the 26 January 2016, and I called and booked an installation immediately. I was told to wait 5 - 7 working days and an installer will contact me which they never did. I called again to follow up, they put me on a call with the installer of which we exchanged numbers and made an appointment. He never pitched on the day of the appointment and he didn't bother to call either. I tried calling him but he's not answering and not returning my calls. It's day 3 today and still no luck.