I think she did that to me too. Few days ago, I called DOS from China since I used the netphone and the voice was not clear enough. After I have been waiting over 40 minutes finally I got through. I think the same lady you mentioned picked up my phone. Without showing enough patience,just said few times :hello,hello, then hang up my phone. NO RESPECT:( Since there is a delay in the netphone. I got so mad but no choice. My interview was 8/5 and still pending.....