There is a school of thought among administrators that posits the view that the problem will go away or someone else will handle it if you don't do anything. Try to get an administrator to fill out a form, read an important document, meet a deadline, get a price on an item, give you some data they already have on hand, etc. I told you I needed it two weeks ago. I'll get to it right away. Some administrators hate each other.
Some faculty members hate administrators.
Some administrators hate faculty members. A veritable love-in of hate. In these circumstances, a grant writer must know which people on campus not to invite to the same meeting. Sometimes this is not possible and then the grant writer will have to play mediator and peace-maker, not roles for which we were trained. In the right situation, losing your temper and yelling at everyone sometimes shocks them and brings them to their senses.