Contract Cancellation

I have been trying to cancel my contract since December 2016. Telkom has given me the run around and no one wants to do their job including managers. I've complained on this website more than three times and still nothing. I'm cancelling my contract because I was given a faulty phone and it gave me problems within three days, this phone was not replaced instead it was repaired and still came back not working. I've been made a fool-sent back and forth between Telkom and Sell Direct. Thulani Mokoena (Retentions Dept Manager) has been sent tons of emails by Meshan Naaido (Call Center Manager) with no response from Thulani. I'm tired of dealing with irresponsible and *********** managers with no roles/responsibilities. I need my contract cancelled and your phone is still packed and ready for collection.