Vodacom biggest ******* service provider

If there was a zero star I would give vodacom a zero rating. I've been with vodacom for 3 years and it's been nothing but short of a nightmare from their customer service upto their management. I have recently upgraded my contract just to be mistold information so instead of paying R179 as promised over the phone I've now been charged almost R500. I call into there customerservices just for them to tell me to call back on another time because they can't help are you freaked serious... I am at the point of canceling my contracts and I refuse to pay cancelation fees as vodacom has been nothing but a nightmare to deal with.. I have a contract with Cellc and they are a pleasure to deal with.. Vodacom is one of the biggest ******* service providers in South Africa and I've had it.. If anyone has advise on how to deal with please pass some over because I am at wits end with vocdacom their staff doesn't even have a way of speaking to customers.