Vodacom is Useless

I am really annoyed by Vodacom service , I always run out of data and when I know its low I will immediately top it up, yesterday morning at 6 I bought a 500meg, the bundle was not activated so I called the call centre in the afternoon and it shows as pending , I told them that I will not be held accountable for any data that is out of bundle rates, this morning I woke up and the data Is still not activated , how is this even possible? Is this a way to rob clients to get extra money? I called the call centre 20min later I get told its STILL PENDING , im seriously irritated, I have NO data left and I will not be charged for It !! if I am I will stop the debit order and come in and pay less the data charges.PLEASE can someone urgently get back to me this is totally unacceptable and very bad service, I regret signing another contract!!!