Vodacom double billing

<p>I have paid Vodacom double in December, yet I am billed the full amount this month, which is an outrageous amount anyway. I have been struggling for over a year to fix it. Smart L package for R1660 pm. When I phone I am told I owe less that R3, yet I get a bill for over R1660 and when I dial *111# it says I owe over R1600. I cannot get any joy from any agent.</p>