Calls cut when attempting to cancel contract

I phoned Cell C Customer Care in order to speak to a consultant to cancel my contract. After finally getting through to a consultant after 9 mins of number option pressing, the call would cut after the consultant transferred me to the appropriate department. This happened twice. Each time I notified the (friendly and helpful) consultant and each time they gave me the same 'direct' number to call- 084143. Each time I called that number I would get the voice tone stating the number does not exist. I am cancelling my contract due to shocking reception in the area I live. The reception issue hadn't been sorted out and now neither has my contract cancellation as I cannot get through the necessary consultant. Cell C, you are a great network generally but have very poor network in most areas and poor follow ups of complaints/ enquiries. Please contact me as I am repeatedly unable to contact you in order to cancel my contract (the nearest Cell C shop is +170 KMs away from where I work and live).