ANOTHER Vodacom RIP_OFF!!!

Are all Vodacom prepaid customers aware how they 'rip' you. If you recharge your prepaid phone - they give you the same amount 'free'....HOWEVER...it does not matter HOW MUCH DATA you have on your phone.....if you do ANYTHING requiring data usage...they deplete/ charge against your (APPARENTLY) 'FREE' airtime they 'GIVE?????' you....NEVER MIND IF YOU HAVE PLENTY DATA AVAILABLE.....I WOULD LOVE AN EXPLANATION FROM VODACOM.....BUT THE REPLY WILL BE THE NORMAL - " It's been escalated"....OR you will be told to read Terms and Conditions (which most people don't do/ have time for".....they 'legally' try cover themselves....all in the name of actually ripping the customer off!!!!!