Unfair Service

i have been a customer of vodacom for over 10 years. I currently have two contracts active and one on pay as you go. I have been calling vodacom since last year November to cancel the contracts as they cannot beat the deals that their competitor has to offer. It has now been 7 months later and I am still been charged an amount that one would pay for - including a device. How is this TREATING CUSTOMERS FAIRLY. It is obvious that it is all about how we can milk our customers and get away.