It's been more than four months since i did the biometrics for i-485 on June 18 2014 , admission based on refugee stats

Unfortunately these things take more time than one would like to believe or come to expect. If don't hear from them during the next 45 days or so, stand ready to schedule an INFOPASS appointment. In fact, I would already schedule one for 30 days from now. You will not, however, be told anything you don't already know during that appointment. You need to be patient. They'll get to scheduling your case when they'll get to it. There is nothing else that can be said or done.