11th hour screwjob 

To royally screw someone out of a payday or "win" at the last minute when they least expect it.

getting screwed over by someone who is terrible at their own job, so they screw you over whenever they can

I almost landed that huge account, but then i got the 11th hour screwjob.

11th hour screwjob by jenny12345 September 30, 2012