Waiting 2 weeks and then no show

We recently moved to Port Elizabeth, and had our line transferred. We have an adsl line. They made an appointment with us for today to come and install the line and set up the router. They even sent a SMS saying a guy has been dispatched to tend to our appointment. No one pitched, and the call centre gives you the normal run around between departments, and you are on hold for most of the time and then the call gets dropped. Maybe it's time to jump ship to another provider the actually hold to appointments and deliver a proper service.