Unable to get phone repaired/replaced

I purchased a new mobile phone in March, it suddenly stopped working within a month. I took it back to the branch and since then have not been able to get any decent service, . <br> After repeatedly explaining that NOTHING happened to the phone (ie dropped, water damage etc) to the staff - they still sent it to Finrite for insured repair(which does not cover technical faults), when they cannot understand regardless of how many times I call to enquire and explain this