Incorrect invoice cannot be sorted out

<p>I started a Vodacom contract and got the phone on 24 December. Paid the connection fee and the pro rata monthly payment for December in store. Vodacom now says I owe them the connection fee and the full contract amount for December. If I phone customer care (082 111) they tell met to contact accounts ( ********** ). If I phone accounts they tell met to contact customer case. This has now happened five(!) times. So far I am not closer to resolving this. The only thing that has happened, is that Vodacom is now threatening to disconnect my number. I am considering cancelling the contract. </p>