Continuous exploitation of my account

I was told to get an app called Data manage. In frustration with the Data Manage app, I went to a store and they told me about the Vodacom4me app. They told me this is way more reliable, and that I must dial *111*502# to check my balance. I wanted to buy a GB of data then and they said wait till its low then I can. Since this ordeal everything that chews data is off. I check both daily. <br> Suddenly my bill went from R1180 to R2060. I was like ha??? In calling the call centre he told me on 23rd March, my data ran out at 5.13pm. I bought a GB at 5.24pm. In the space of 10 minutes, I was charged R790. I was on holiday, there is NO way I could have been using my phone. <br> I then tried to buy more data on Mon 28th, and app was giving me error message, so I could not. I was out of data from Tuesday 10am till Wednesday afternoon as app said no service. I have continually asked that my total bill never go beyond R2000. I am told now they see that as R2000 above my normal bill. I have asked 5 different pple this year to change my email address, it is still not changed. I am doing all I was told. I refuse to be exploited like this. I keep getting different feedback.