Trapped in the Machine

I was on a 4mbs uncapped ADSL line at home. I received a call last year approximately around August from telkom asking if I would like to upgrade to a 10mbs line but with a 50gig cap. They said they would send a rep to my home which they did. I signed on for it, but changed my mind and called telkom about 4 or 5 times telling them not to implement this new plan. I asked them to note my request on their system which they said was done. About 4 months later the new plan was implemented and I have been trying ever since to change this. No matter the calls I make, the walk-in to their shops that I do they do not change this. I am at the point now of just cancelling my whole telkom line. What a mess. All talk about Telkom and service is *******. They do not give a damn as long as they can continue draining money from you. Fortunately I am an attorney, so I plan to not pay and see them in court.