Any unhelpful customer service representative. Usually found working in banks, post offices, IT departments, or all levels of government service. Often noted for an undeserved sense of superiority, a skeet beaver's main defining feature is a general cluelessness about how to help their customers.
Can be used for any person paradoxically both too smug and too inept to do a decent job.
John: Dude, did you get your refund?
Mark: I was on the phone for an hour with some skeet beaver, finally I just gave up.