Static IP Blues

I am paying for a static IP address on my Telkom ADSL account. I received an sms confirming that I now have a static IP, however it still changes every couple of days. Two months now and many phone calls to Telkom to correct but nothing has changed. Every time I phone Telkom I spend an hour on the phone being shunted from pillar to post. Seems they have no idea how to do this. I just get attitude on the end of the line.

I even been told Telkom has to come and reset my ADSL modem. Being in the IT industry I know all it takes is an entry in Telkom's DNS server. The number in question is ********** . My suggestion to Telkom is to get competent IT staff. I was even given my static IP number, 41.146.158.90 - I'm sure I was given this number just to shut me up.