It could take a while, we waited at least 3 months for ours.
Main reason was that they converted our line to a fibre-optic exchange, and had to dig up some old copper wire that they had left in and adapt it for ADSL. They had to test 3 times and change 2 faulty handware devices (no idea what) at the exchange and eventually got the line approved. (this is about 10 weeks down the line). So I was promised first week in July... Nothing... Second week... nothing, eventualy near the end of the second week I get a techie rocking up to install the line. Take a guess at what his first remarks were: "Sorry, you're on a fibre optic exchange, they have to see if they can put in copper lines...".
I gave him a piece of my mind about the whole story and assured him that the lines HAVE ALREADY been replaced, but he said nothing he could do till he checked the logs back at the department and would come out the following day.
Much to my supprise, this guy DID actaully cary out on his word and we had the line installed by the next day.
To cut a long story short, however, I think there's bugger-all communication between divisions/technical teams at Telkom, and nobody seems to check and/or have access to anyone else's reports or logs on a call.
The good new to those still waiting is that I've "heard" of cases (via the grapevine) that have been installed in about a week, but these are few and far between... More likely, be prepared for a wait!
Cheers, RiOT.