No Installation on appointment

Appointment was made for a new ADSL installation for 26/03/2015 between 07:30 and 12:00. Around 10:30 called the call centre to follow up on the installations as no one have arrived, Call centre agent said that the call was already dispatched around 08:00 the morning and the Technician will still come to site. At 12:00 phoned the call centre again and only got hold of an agent at 13:05 and explained to the agent that no one has arrived to install the ADSL line. Then call centre agent said the technician is in the area and will be coming soon. By that time I received a miss call, as far as I can see it would have been the technician but could not answer as I was busy with the call centre on the line. Then at 14:00 Phoned the call centre again and this agent said the technician is no longer in the area and he won't return to do the installation where he already called me over an hour later for when the appointment was suppose to be. Then my phone call was dropped when I was still holding on for a second manager to speak to.