Autopage & vadoacom service stinks

I was given a call roundabout the 28/10/2015 at about 1pm advising my cell phone usage had increased to +-R5000. I was shocked as I never ever get to these levels. I generally dont exceed my bundle. i feel it is unfair that Vodacom or Autopage did not send me notifications of what was happening, as in the past Vodacom did send me reminders, that my data was being depleted.I could have stopped this from happening.I received an email on Saturday 31/10/2015, which was too late.I feel undone by my service provider and Vodacom.I disputed this, as something could have been done from the network to stop this.Service provider should not wait until the last minute, to advise customers.I even bought an extra bundle during the month to avoid paying high charges, why would I allow this to happen?My account is in advance by probably 8 months as I am trying to pay my contract in advance. I even have a limit on my account, so this should have not happened.I checked my Vodacom balance that night, and the next morning, and it showed I have enough data available.I have sent an email last week on Monday 2/11/2015, and have had no response.Autopage & Vodacom service stink