I have posted numerous times on the Google Voice Community Board since GV does not actually have anywhere to contact with a "trouble" issue.
Here is a link to the GV Community Board.
It should take you right to my post. If you are one of the people having issues with GV - write something on this community board, on my thread.
Google is big and the 439 exchange is small, so I am not very hopeful, but the squeaky wheel has the better chance of getting grease.
Thanks - Rob