Getting angry ultimately doesn't solve anything, but I'm not surprised this happens. They may not be highly paid, but too many BAA and BA staff do as little as possible, stand around chatting, opening gates when they feel like it
, and the things I've seen baggage handlers do to luggage airside are shocking (not just at LHR)
.
You need to do more than wear a uniform to be professional. It's a state of mind - a way of thinking. That applies from top to bottom of BAA and BA.