Cancellation

I want to cancel my contract. You have not met your end of your contract in sending a technician to come and fix my tracking unit and yet you are deducting money on my account every month. I pay for a device to offer an active unit. I kept my end of the bargain and paid you have not and by right I’m entitled to a cancellation with immediate effect. You guys always dingle this contract business in our faces and yet you can’t keep what you need to provide. I want a cancellation without any cancellation fee or else I’m taking to the national consumer commission and/or ombudsman.