Delay in installation

I app**** for a adsl and voice line to be installed at my house, first sms said 4 Dec then received an sms saying 2 Dec between 7.30am and 4pm. I had to pay someone to stay at home because I cant stay home the entire day to wait for the installation. At 2pm I call Telkom to find out if the technicians will still be coming and unfortunately the agent tells me that they tried calling me at 11.15 which is not the case as I have been waiting patiently for the call to say they are on their way. So wih 2 hours of the day to go, I doubt I will be assisted and will have to pay someone again to stay at home the entire day to wait for the technicians to do the installation. The agent also says theres nothing she can do. She couldnt even assist with technicians contacts or tell me what to do next.