Surely 20 Gigs of Data is way too much for a family of 10 to use a month, for R500 a month you can easily share this with 5 of your neighbours...That’s R100 per house.
Unless you only use internet for mailing without any attachments don't even dare go uncapped.
Before opting for a "cost-effective", "extremely competitively priced" - read "cheap" - uncapped ADSL solution for your Business or Home, ask yourself the following questions:
Note Telkom provide most of this bogus providers with ADSL....They buy a specific amount and redistribute it...With these tough times they all want to stay afloat.
Don’t get ripped off and if you do remember you were warned.