SIMs NOT ACTIVATED

I've received my modem with a SIM last week and my 2nd new SIM on Monday, Its Thursday afternoon and still struggling to get the SIM activated. A very nice lady called me last week to check if i have received my modem and explained that the will now activate my SIM but still nothing :-( The number in the nice booklet (which appears on every page in bold) just rings? I prefer dealing with Telkom Mobile directly, i experienced better service....There are so many complaints, what is being done to improve??? shocking service.