Some days later.
An update for those few persons who might read this thread when faced with similar problems.
First off, no, you are not alone.
More details
For then past year I had to use the Telkom website at times.
Trying to access the Telkom website may be unavailable when in UK by some crude measure 50% of the time.
You can try from local ISPs in South Africa. Even from these at times the site may not work. This include Telkom client networks.
You can see some users report the site worked when down fro me.
If tested from various ISPs in UK, South Africa {Vox, Afrihost, WebAfrica and Telkom} and North America one must assume my observations are accurate.
No proxies, using Google DNS servers and IE, FF, GC as browsers.
Other ISP websites in South Africa always worked as expected, had zero issues till now.
An example, again today Telkom Website fail from some UK sites, another day all may fail.
Today it works perfect from za ISPs and US.
Since it does not work I also tested from Debian, IceWeasel, and Tor {some random world Ips}. Also a fail.
What a pain.