Vodacom terrible service

I've had endless problems with Vodacom. Firstly my contract was upgraded without my knowledge or consent and I was left with a higher bill. Then when I spoke to a consultant they offered me a deal over the phone for a new contract which I agreed to only to find out at the start of the new month the contract did not offer what they said it did. When I queried the contract the next consultant was only interested in making sales on my other Vodacom numbers that was about to expire in a few months. After being put on hold a few times I hung up.The consultant must have been irritated or something canceled all my contracts without my knowledge or consent leaving me with penalties for canceling prematurely. My account was R1000 extra for that month! I've sent emails to customer service without a response now for about a week. I've been years with vodacom but now I'm thinking about changing networks.