I so hear you. My currently underappreciated roll is covering for any two other teams, monitoring the entire sections billing, doing half of the billing, monitoring and chasing unpaid bills (mostly so that credit control don't embarrass us to the clients), teaching the fee earners how to bill, teaching credit control how to identify correct bill types prior to above-mentioned embarrassment,

... sorry, ran out of breath.
My point is, do any of them appreciate that you are a professional and doing a b@oo$y good job? Of course not!.

Hope you enjoy your Fridays off!
Jess