Just adding my two cents to the convo. The self install option is the best thing that could have happened to me. Knowing how long installations typically take (9 weeks at our last place), we were "smart" and applied for a regular landline before applying for DSL. They promised us a turnaround of two weeks for the landline installation, but it was actually about 11 days. That was pleasant enough.
The day they installed the landline, we then applied for a DSL line, and got the standard party line of "4-6 weeks before installation". The next day, Telkom called again (that was the big stunner, Telkom actually called us back!) and offered us the self install option. They said a line would be available on the 8th of March, so if we did the self install route, we'd be online in a week rather than 6.
So we headed to the shop, bought a modem, and this morning, set everything up in preparation for Thursday. I was stunned to see a solid sync light come up. I was sitting on hold with the DSL line to get the settings for the router when they called on my cell and said the line was ready.
Minutes later, we were surfing delightedly. 3 days earlier than they had promised, and nearly two months sooner than we had actually expected.
Self install for me, all the way.