Follow the leader?

What do you do when your work team is a headless horse running into walls? When are boss is gone it is like Mr. Ed got sent to the guillotine for eating someone else's carrots. There is always someone else put in charge but for some reason this said person never seems to have the time or understanding to do it. I have never been one to take up the reigns of leadership but I feel like it is forced on me sometimes. I see some one needing help and when I can't think of anyone else who can help them I feel obligated to do it. Are housekeeping team is divided into groups and sections that we are responsible for which in theory should make things easy but oh no... no. I work in a independent section on my own far from anyone else. We all carry walkie talkies to keep in contact and receive orders. When the boss is gone I am the only one to respond to the receptionist who is in the area that is NOT mine. I wait for her to call a second time as to not jump the gun but no one ever replies. I go on a wild goose chase to hunt down the person the message is for and I'm always being told "It's not my room" or "That's not my job." I know I am not the only one keeping track of calls so it is frustrating that I end up fielding them all. I'm happy to help when it makes sense. I will go out of my way to make sure things happen but there is some one who is intentionally ignoring calls for help when it is her area calling for help and not mine. I do not know the area and I do not have equipment there to do the work so all I can do and have done is let the right person know what I have been told. They take this very badly, in fact I think there hoping I would ignore the calls so there not forced to do the work. They only start replying after I talk the call and it becomes clear I am going to find them and tell them what needs to be done. Sigh! I would feel wrong ignoring these calls so I keep doing it. I really don't see myself as a leader but so many people come to me for help and work advice and the receptionist asks for me by name when no one else responds to her. 0_o I'm just glad my boss is coming back next week. I am tempted to tell her what happens when she is gone but I think it will cause needless, painful drama which in the end will resolve nothing. I just need to keep on truckin (hah lame) and not worry about the decisions other people make.