A suggestion:
If Vodacom's Blackberry service is/was so crap, I think that all those affected should start a campaign to inform all South African's about it. Give Vodacom the bad publicity that it needs.
Put up a website to highlight the issues, and track Vodacom's responses. Get people to email all their friends, family, colleagues, etc, about the problems, with a link to this website.
Get sponsor's for adverts in the newspapers (local, smaller newspapers will be cheaper than Sunday Times, Star, Times, Citizen, Sowetan, etc).
Light a fire under Vodacom's arse, and hopefully this will make a difference. South African consumer's don't complain enough about the $hittie service we get. We, as the myBB community, who have the skills, knowledge, resources, and financial muscle, should spearhead such campaigns.
If thousands of people start asking for refunds for the non-service they received, Vodacom will be forced to do something. They will be urt financially, and image-wise. MTN might catch a wake up as well, and think - "$h|t, we better jack up and not end up like those fools".