I checked with NeoTel and yes, the speed is accurate at 156kbps (not bytes). When I commented that it was very, very slow the guy acknowledged and said that it might change in the near future but that this was a very provisional indication of speed.
That's a shame, although there is still a tiny ray of hope. If the wireless tech they are using is actually similar to the 2.4Mbps tech you should get 156kbps constantly. If however they base it on some 158kbps wireless tech and you only end up getting 40-50kbps most of the time it will be another Proudly SA internet abomination (PSAIA).