carlotta, that's ridiculous! Write a letter to the editor or something. Be the squeaky wheel. (But don't expect anything to change!)
I was the squeaky wheel and got my wheel repaired because of it. 
I'm bringing my bike into the building now. That's not allowed for the same reason your building doesn't allow it. So far I've managed to sneak it in. But I have short-timer's syndrome so I don't care if I get caught. If I cared, I think I'd just walk at this point.
2009 Trek 7.2FX WSD, brooks Champion Flyer S, commuter bike