No Feedback/Data Issue

<p>I saw that my phone used data while on a wifi network, I logged a call with vodacom explaining that it was not my phone that could've used that much data, especially while on a wifi network @ night. They gave me a reference number: S3-G0 ********** . I waited for feedback but got nothing, it has been more than a month now, and I got a bill of more than R3000 which I will not pay because it is not for my account! Now they have suspended my phone without any feedback regarding the call that was logged. I am thinking of going to the ombudsman/Sherrif if they can't resolve this issue.</p>