Extremely frustrated Telkom client - Quick to take money but no service

I know a lot of people are complaining about service received from Telkom but one would think that they will start to do something about it. I ordered adsl installation a month ago and I as a customer needs to follow up on the progress the whole time, which is what I did on Monday. I was informed that a technician is available on Friday and that he is booked. I will receive a confirmation sms within 24 hours and the technician will contact me early on Friday morning to confirm a time. So as it is now Wednesday and no sms has been received I contact Telkom again (it takes about 15 minutes of hanging on until you actually speak to someone) after which I am told that no booking has been made but the issue has now been escalated and I should receive an sms within 24-48 hours, which is great seeing as they are supposed to be installing the adsl line in 48 hours based on the what I was told on Monday. Telkom needs to understand that we are in the working class with paying jobs and cannot jump to be at home (which by the way takes me about 30-45min) when they contact me to say they will be there now to install the order. It is very inconvenient, poor planning and extremely frustrating. There must be a way for Telkom to streamline their services they provide to the public. I feel very sorry for the sales people who handle the calls as it is not their fault but they are the ones that take the beating from frustrated clients all the time. I'm very very disappointed in the service provided by Telkom. They are quick to take your money but when it comes to provide you with the service they are nowhere to be seen.