tedster - 1:47 pm on Feb 8, 2010 (gmt 0)
There are four main options for communicating with Google, and the details are listed in the Google Forum Charter [webmasterworld.com].
However, don't expect immediate action. In most cases, Google prefers to study the situation and understand how to improve the algo so it doesn't miss whatever the spammer did to get past it. Quick, manual adjustments are rare these days.