unsatisfactory customer service

on the 5/10/2014 i had taken a contract from cell c. It was a phone of my choice being the reason i took the contract. On the 25/01/2015 the phone seemed to have some problems so i took it to ballito cell c, i was told cell c repair center was in gauteng so my phone will have to b booked in and will tke up to 21working days.. on the 29/01/2015 received an sms from cell c saying th phone was received by repair centre in midrand, on the 16/02/2015 i received another sms from cell c saying my phones has been dispatched from repair center an given a referrence CLC***, On friday 20/02/2015 i called ballito cell c only to be told by the manageres that my phone is being replaced and she will email me my options. i received no word or email from them so saturday i went there personally, the manageress then tells me that my phne has been discontinued and was forced to take another phone at the retail value the phone holds now, they said they had no idea the phone was goin to be discontinued.i was given a list of phones which i would have never chosen , finally i decided on 1 that will cost me 400r extra, today i call they say i must now pay 700r. they say i cannot cancel my contract.