Do yourself a favour and buy a proper phone, it won't be much more expensive. Check out the Orange ZA store http://store.orange.com/za for some really great prices.
I am regretting my purchase and am seriously considering this. I doubt I would be able to get a refund from Zest though.
They seem to be only assisting people that are on Facebook (which I am not). Their email on their Facebook page ([email protected]) sends back an error "No Such User Here". I have tried emailing Debbie and David (Debbie's email on the Zest website). There is one more email address left for me to try.
I just see they also updated their contact numbers - literally some time this evening it must have been. I might try those tomorrow.
I'm going to go and torture myself and look at the phones I should have looked at in the first place on the Orange site. -_-