Billed for data that I didn't use, no support!

I received my invoice for April which states that I have used 1.9GB of out of bundle data and has charged me around R2000 for it. On the same bill is my charge for my monthly recurring 2GB data bundle.<br> I meticulously monitor the data usage on my cell phone and can prove that I did NOT exceed my 2GB data bundle.<br> It looks like, even though I was charged for it, my data bundle was not taken into account.<br> I have been unable to contact anyone for telephonic support and my email support ticket was simply closed without any helpful action.<br> I will be instructing my bank to stop all payments to Autopage until this issue has been resolved and my account reflects accurately.