MORE BAD SERVICE FROM CELL C

We have contracts with Cell C. I have only had bad service from them. My husband's phone, a Blackberry Z3, is not even a year old. A COUPLE of months ago he cracked the screen, but it did not crack through, only the thin glass on top cracked. So the phone is still working, no need to replace the whole screen, only the TOP GLASS. Around 6 weeks ago the phone stopped working, it did not pick up any signal anymore. We took it to Cell C, they sent it in for repairs and the lady said she would also find out if they would ALSO replace the screen. That was five weeks ago. Last week I phoned to hear if the phoned has been repaired and if we can pick it up, they refused to help me because the contract is on my husbands name. Yesterday they phoned him saying it would cost R1800 to replace the screen?? He told them to repair the network problem and leave the screen, after which they refused to do so, saying that now they wont do anything because the screen broke so (but it is still working) they wont fix the network issue? So what they are saying is we have to pay for more than a year for a BROKEN PHONE now ??? What bad service and money making story is this?