Harrassed by vodacom

<p>My wife took out contact for 2 years with vodacom for me for data. After the contract period we cancelled and they just keep billing us and is now threatening us. Last night someone called and even without verifying who he is speaking to start getting into my wife's character. He accused her of running away and she will wake up one morning with nothing, no job etc. I just think this is out of order as we always speak to vodacom but the refuse to listen to reason. What more can you do when the service was cancelled and they keep billing her </p>