Office Pranks, Office Humor, and Office Stories - One Crazy Office

This will be a topic of a lot of conversations on this blog just because how important it is in the office. But in this installment I'm going to talk from personal experience from a particular group of people. In my line of work I have to deal with a lot of people and have to rely on different groups of people within the office. I personally don't have that much pull where I work, but I hope to one day work my way up.
Anyways this is particular group has to let me know when they are hiring anybody and they also have to enter that person in the directory at the office where we work. I am supposed to be notified the day before that they are bringing someone in and the name of the individual. Well I don't think they have ever been consistent enough to do this more than a few days before they just drop the ball entirely. Lately I am having people come in and let me know they are a new hire and that they are supposed to start today. I will be like " oh really says who?" And my policy is I don't want to make the person suffer because of the stupidity of one group. So as long as they are in the directory I will be able to help them.
Well over the past few weeks they haven't even been doing this. I will be lucky if they hire someone if they are in the directory the next few days, but we will never receive notification about their start date. But the problem with this is also these people who are brand new hires are walking around without identification and could walk away with half the building and we wouldn't know anything.
Also they are supposed to let us know when people are being let go as well and taking them out of the directory. This is a even more serious problem because if they fire somebody even if they aren't a threat to come back we need to know so we can deactivate their badge. As you guess if they fire someone and don't let us know then they can easily walk right into the building and walk out with whatever they want and there is nothing we can do about it since we will not know a damn thing about them not even supposed to be on-site.
Has anyone out there in Internet land have to deal with a group of people that they have to rely on where if they don't do their job then it makes your job that much harder? Remember this is not just one person. This is a entire group of people working in one department.