Cannot get help to cancel old contract!!!

I have been a Vodacom client from the time they were GSM. I never had a problem. You could walk into a store, and have you problem solved... NOW EVERYTHUNG MUST BE DONE IN LINE, or over the phone. It is a nightmare!!! They are easy to sell you something, but please do not try and cancel something. !!! We bought a new large data contract, because we would be able to canc l the small one the next month. 10 mails later, and 100's of phone calls later. Even taking to someone that stated it was now cancelled. Still got an account this month. HOW DO WE GET HELP????? ELIZE ***