Rude cancellation call centre staff.

Looking at Vodacom ratings I doubt that my complaint will be looked at. I wanted to cancel my data bundle after the contract expired but the friendly sales lady offered my a cheaper option at R99.00 I accepted on the condition that it will not be more than R99.00, no extras! Guess what, got the account and they are charging me R119.00. This is not the first time extras are added to my Vodacom contracts. When I tried to get it resolved the rude people who answered listed to me complaint and then as I said I want it resolved they put the phone down. Twice! This is how some big corporates abuse their customers - they simply are to big to care / or just do not give a damn. Customer service is not a word these staff understand and/or care about. I know they can check the recordings, if they cared to address customer concerns.