The story is that DSTV is no longer issuing C Band cards in South Africa after January 2007. They had previously allowed this so that viewers in SA could receive the Portugese bouquet. As this is now available on Ku band, they are stopping the issue of C band cards. You therefore need to either go to a northern African country (e.g. Nigeria, Sudan, Eritrea!) to get a card or else find a supplier that has already done this. I'm based in Bahrain and one or two of the suppliers here tell me that they have cards that will last past January. Here's hoping as I don't think I could survive the Middle East without DSTV!
Good luck.