Upgrading problems for me

It looks like everytime i upgrade my contracts i end up in problems with vodacom. <br> 2013 i had the same problem again. I upgraded my topup line getting Iphone (again top up) and i made it very clear over and over again that i did not want any contract that was more than R500 per month. Today i have a bill for R5200. The sim card is in my Ipad (which was a top up before) and i never finish a month before i am cut off yet today i just learned that its an open line. I dont use this line but just for data of which i work with free Wi-fi at my office. <br> <br> <br> this is not only wasting time on my side because now i have been on the phone the whole morning back forth between Woodmead branch and call centre, trying to resolve this. Where do we go with these kind of problems