Some people just can't appreciate what you try to do for them. I won't name who I am referring to in this post however, out of whatever little respect I might have left for him/her.
So what if we're a little harsh with our words? In the end, we're still doing you a bloody favor. Come on now, surely you don't think we are EXPECTED to do the things we do for you? No, we do them out of the generosity in our hearts. But still, if this is the kind of response and thanks we get from you, don't expect us to go around covering your ass anymore.