Installation tech just never came

Called Telkom about a week ago store make an appointment for someone to come and activate our line, got an appointment for today between 8:15 and 17:00. Stayed hom a ALL day waiting for the tech to come, nothing. Call them at 17:00 and they tell me the install is now with a sub contractor and still scheduled for today, so I should stay home and wait.. So what now? Wait another week for a appointment? Terrible service, and for a adsl line what else can I do? No one else to get 1 from.. Just have to deal with their terrible service.