Continous data theft by Vodacom

I bought 1GB of data and it just disappered in less than 5 minutes without connecting to internet and after complaining on Hellopeter. Vodacom sent me an email that they resolve the problem and gave me back 1GB of data yesterday. I decided not to use at all I connected my vodacom phone via WIFI and never used touched the 1GB and around 12am when I checked my balance that 1GB disapper without even touching it.

I am fedup of VODACOM. I spend atleast R2500 each and every month on Vodacom's data but they still see if right to ***** from me.?????????

I am tired on this nonsense, no one is even telling me when my data went. It just disappears!