So disappointed on Vodacom's billing service

I bought a smartphone iPhone 5s on Friday the 27th and within a week my account has been blocked because they say my data usage has reached a limit. in a my understanding, they are supposed to send you 3 SMSes before they block your account, of which only 1 came in telling me my account has been blocked. I logged a call last-week of which no one has called to make a follow up, when I requested my statement to check my usage, they say I can only get it on month end, I have a problem now-why should I wait for such a long time. when I ask them to change my package, that can only happen after 3months. so now basically I have no phone, cannot make phone calls, send smses, no social networks nor email. So Disappointed with a Capital D.