Fail to honour repair warranty

Our faulty phone was sent in for repair over a year ago.On return it was still found to be faulty however because our daughter works for an NGO out in the country we could not return the phone in time for teh warranty cover.<br> We complained to Cell C Johannesburg who said they would send it to Sony.We had to hand it in with a full list of the problems.We sat with the consultant to ensure that the items were listed before being sent to Johannesburg.<br> They quoted a price of R1500 to repair the phone which we paid.The phone which was returned but sent to KZN instead of to my daughter in the Free State!(long story on its own!)The courier dropped the phone off and when she tried to use the phone it was immediately apparent the faults were still the same!We returned the phone as soon as she could get a lift to Jhbg.<br> Now after a long delay and many follow up Cell C want to quote me MORE MONEY to repair the phone.This cannot be right as we notified them immediately upon return of the phone.<br> Do we have no consumer rights in this regard?