Contract cancellation

I took out a cell c contract in Feb 2016 but I've been unable to use at my house, no signal at all. I logged a query with cell c technical to investigate and after several phone calls I made to follow up and they confirmed that theres a cell c reception problem in my area and that they were in a process of implementations to fix the issue and they were waiting for approvals and confirmations before they can go ahead with the installations. So since then I've requested to cancel my contract since I cant use it because they dont know when it will be fixed, technical department warranted this request that I cancel it BUT I've been taken from pillar to post when I requested the technical report and confirmation that I can return my handset to my nearest cell c store before they can cancel it, I've spoken to 5 different agents who cannot supply me this written confirmation, I requested to speak to the floor supervisorbut he's always either on lunch or on another call, I get put on hold untill I eventually give up and hang up with no one coming to attend me. Very ****ed and dissappinted with this behaviour. I spoke to,Nomali, Xolile, Nomvula,refilwe, Banele. SD486854. Pls help