I've been away from Combine for some time now, and I've just returned. Apparently the faction I belonged to has since dissolved, and I'm aboard one of their ships. However, I can't pilot it, and the hatch is locked so I can't get out.
Regar, that ship currently belongs to the Kathol Republic, so you can contact them for assistance. Contact information should be available on their website. Generally the admins will not step in unless there is no way to work things out in game.