Worst C

I have a contract phone with Cell C and I booked it in for repairs on the 16th of September and it came back on the 3rd of October, the repair centre told me the faulty part was replaced with a new one and Friday I tested my phone and still the speakers are not working, Im told to book the phone again which means I will have to wait another 14 days for the phone to be brought back and they do not provide any loaned devices, I called the repair centre to ask for the handset to be changed since its clear they are failing to fix it but they wont and yet every month Im paying for it, I asked for the contract to be cancelled since they are not willing to help me and I'm being send from one department to the next and no one is willing to assist me, Cell c does not care about customer satisfaction because if they did I wold not have received a device which is not working where else they told me last week that they are doing quality checks.