Simple: Fire them.
Why You Treat Me So Bad was created in 1986.
Don't Treat Me Bad was created in 1991.
Bad very bad
Tell management that they're bad
Bad, but if they are nice, they treat it nicely (but they won't).
when he does not treat you right
bad
Bad
bad
Bad.
they are cowards and they need the coverage of other people to show their bad side.
really really bad