lol ic
arf, try to locate the route your line takes from your house to the nearest pole and if your feeling brave and can access that pole, get onto a ladder and have a look.
I know exactly where the pole and box is for my line and where it connects to on the streets surrounding - always useful info to have. You need a large ladder however, the boxes are a good 10 to 12 feet up on the pole.
That's all I'll say - it's obviously not legal to go fiddling around with Telkom stuff, but it sounds to me like a simple case of a loose connection in the box your line connects to.
It's not exactly rocket science at that level of the connectivity - of course, once you start going from pole to pole across the neighbourhood it gets more hectic
Your within your legal rights to examine the pole and the outside of the box, but of course, your not allowed to open the box and fiddle inside of it. You could however, just by looking, be able to determine whether the wiring looks dodgy and can inform Telkom.
It seems obvious to me that it's a very localised issue, however, it could be a loose connection 5 poles away into your neighbourhood.