very angry

Got a contract with cell c since from 26/01/2014,its a 9720 blackberry phone....on the 24/05/2015 when I charged my phone it couldn't charge took it to randffontein cell c on the 25/05/2015 and they booked it in for repiers. On the 02/06/2015 they send a msg saying I can come collect my phone, when I got there they tell me its beyond repair... I mean how do I pay 4 a contract phone that is beyond repair... Am not gonna be using it 4 the next 7 month BT am gonna be paying for it.... its not fair the phone stopped charging and am still paying 4 it...