vodacom overcharging

<p>I received an sms from vodacom stating that i have exceeded 70% of my mandatory R2100 call limit. This came as a shock to me as i hardly use the phone ever since i got a new contract. i then contacted vodacom, and they told me that the bill is for data usage- which is suprising because i do not have access to use internet on the phone i was using!!- not even whatsapp for that matter!! Vodacom had better fix this and fast, as i will not be paying this bill- this is just ****************!!!</p>