give the shaft
give (one) the shaft
To exploit, cheat, or take advantage of one; to treat one unfairly. Whenever a promotion comes around, management always manages to give me the shaft. Because we live in a tiny, rural community, we feel like the government tends to give us the shaft.
give someone the shaft
Sl. to cheat or deceive someone; to mistreat someone. (See also get the shaft.) The boss really gave Wally the shaft. Somebody always gives me the shaft.