Oh, you probably didn't hear. under normal circumstances there would be enough bandwidth to go around even from SAT3 since the soccer needs guaranteed bandwidth. Here's a newsletter from Cozahost.
Millions of ADSL users in South Africa are still suffering from broken or slow internet access after the SEACOM undersea cable failed on Monday.
If you (like most people) are affected by this outage, here follows a quick explanation of what is happening. (If you are not affected because you are using Telkom and the SAT3 cable, this may be your last chance to make fun of the SEACOM users...after all: they`ve been paying up to half less than you are for the same thing.

The bastids.)
SEACOM is a 17 000 Km long undersea cable that lies on the sea bed on the eastern coast of Africa. It connects to several African countries, (including South Africa) to Europe and India.
On Monday morning (04-Jun-2010) a repeater on the cable (a boxy thingy responsible for amplifying signals) died suddenly and permanently.
No repeater means that the signal cannot travel beyond the repeater, so the cable is effectively dead beyond that point.
There is a split in the cable: one end goes off along the African coast, the other off to India. As Mr Murphy predicted, the repeater is on our side of the split. This makes it impossible to re-route traffic via India to the rest of the word: a fix that would have been slow, but workable.
The second item of bad news is that the repeater is several days away per ship. A special cable repair ship was dispatched (Vernon Koekemoer in a canoe won`t do), and, once the ship arrives at the approximate location, it must locate the cable where it is in 4.7Km deep water, then locate the repeater, then send a robot down to cut and bring the cable to the surface and then repair the black-box, test it and send the robot back down to mend the cable.
And good the good news?
Erm.
We`re out of stock on that.
Due to World Cup commitments everybody cannot just hop unto the (Telkom) SAT3 cable because of bandwidth guarantees made to Fifa. Maybe, after the final on Sunday, SAT3 bandwidth will become available.
At this point one has to ask: how is it possible for a single black box to disrupt much of South Africa`s internet connectivity?
The answer is depressingly simple: Lack of redundant capacity. The choice is: pay through your nose or try your luck. Equally unpalatable.
Let me explain: At the moment there are 2 submarine cables system servicing South Africa: SAT3/SAFE and SEACOM.
SAT3/SAFE are run by Telkom and you PAY for bandwidth. That`s right "Pay" with a capital "P". The good thing about the SAT3/SAFE system is that it consists of two cables: if one fails, traffic is switched over to the other plus, if required, to satellite.
SEACOM is much more affordable but it does not have this fail-over capability.
Under normal circumstances that would not be a train-smash because, if SEACOM failed, traffic can be re-routed via the SAT3/SAFE system....except during the soccer world cup where bandwidth and stability of the SAT3 system must be guaranteed above all else.
How`s that for an own goal?
That`s the jist of it. At this time the saga is still unfolding - see Google news for updates and you may find this interview with SEACOM interesting...in a depressing way.
Later this month (or early next) a new submarine cable lands in South Africa - EASSAY which will make a BIG contribution to faster, cheaper and more reliable bandwidth.
At least we won`t all be hanging by our nails hovering over an endless abyss of pitch black disconnection for too much longer.
I hope that clears things up a little.
So you see, that's why screamer got bumped off. In fact, even openweb is bumped off and Afrihost was never on.
Besides, you agreed to a best effort contract so shutup and wait. You probably should've considered the possibilities before you signed up seeing that this isn't the first time Seacom has failed in the past 3 months.
Also don't forget that the Screamer overhead is somewhat higher since they actually need to pay airial licenses for their antennae.
You know, it certainly don't make any good business sense to have more expenses than income so maybe that's why they don't have the alternative bandwidth. In overall, all cutovers have been limited or just done away with. In-fact, even as read above TENET had to jump in to help carry the extra burden though they had some failures too.
Seems like your homework was only half done.