I was on a n/b D train at 34th today. The motorman called for her conductor to "open the front." This was done over the PA. It took at least three calls for the conductor to acknowledge. This is why I hate these people. For years, I have witnessed conductors and motormen not answer each other via radio, PA or IC. There is not excuse for this property or human life could be in jeopardy. I once told a conductor that his m/m was calling him and he said that he did not hear him and we were in the same car. On a class 1 railroad, when that radio or PA calls, YOU BETTER ANSWER IT! Someone is going to lose their life AND SOON. Stop this customer service garbage and return to running your trains and pay attention.