Handed over after cancellation no response yet

I have cancelled my telkom line numerous times due to non service due to non service. It almost took me 6 months to eventually get the line cancelled. Telkom kept on billing me, but on 18 Nov 2014 I got an sms that telkom has eventually cancelled my line. Today (21 Jan 2015) I get an SMS that my account has been handed over to VVM Debt Collectors due to non payment. ***. What about the monthly payments I had to make for NO SERVICE? The months I had to pay after cancelling? Can I hand you over to debt collection since you broke contract and never sorted out my problem for 6 months, but still expected me to pay. I am not prepared to pay you any moneys, nor am I prepared to enter into any correspondence with debt collectors. You do as you please. Take money from my account, don't cancel and expect me to keep on paying without having any service whatsoever. This just isn't fair and I will take it to the consumer protection act if the debt is not written of and my name not cleared. I want Telkom to email or phone me and sort this out as a matter of urgency. I now have a Social Media ***, but still VVM is trying to get me to pay for telkom not delivering a service