POOR SERVICE

I have had unusually high accounts. I requested a investigation with Vodacom ***** and Risk. They sent me an email that my sim has indeed been inserted into another device of which I don't own. Yet in spite of this they say there is no ********** activity!!!!!<br> Just the fact that someone has a sim registered to me is a problem. I have my original sim in my possetion. Vodacom wont admit anything , nor will they provide me with substantiated proof!<br> I cant call in for information because they say my number doesnt exist!<br> To say I am irritated and frustrated is an understatement!