WOM expertise, please help

I filed WOM on March 29, 2007, send out summons and all answers will be due June 3, I sitll haven't get anything from US attorney ? Anyone have experience as how to contact US attorney ? I went to US attorney office and the clerk can't let me talk with anyone, so far, no response from US Attorney and no idea who I should contact.

still another week before due day, if no response by them, should I file motion for default ? Anyone have sample to file motion for default ?

thanks