Worst service provider

I have 4 contracts with Cell C. In December my cellphone due to software issues was sent in for repairs. Firstly after following up numerous times I was told that this was a software issue and phone can not be repaired, they gave me a reference number told me to contact and follow up with replacing my handset after a couple of days. Phoned and went from one department to another for a total of 2 hours then got cut off. I phoned back and again went from one to another to get this resolved. In conclusion was told that even though the error to handset was not caused by myself the contract is in it's 14th month and that they will not be replacing my handset nor adapting my contract to receive a new handset! In the same breath I was told that I have to for the next 10 months pay for a cellphone that I did not break firstly and secondly will not be replaced. THIS IS OUTRAGES. I have logged incident report unfortunately they are not getting management to contact me for a resolution to this issue I refuse to keep on paying on this contract and can not wait to cancel all my contracts! Best service provider is a complete and utter lie.