What happenes next? and who can I ring (the number would help) as the Department of State for visa processing web site is not very helpful.
The National Visa Center (NVC) typically issues a packet with instructions directly to you regarding how you should proceed with your case. The following email address will consider your inquiry: NVCINQUIRY@state.gov. You might also consult the following link which has FAQs on the process: http://travel.state.gov/visa/immigrants/info/info_3180.html.