I monitored the Problem Child first when I got to the job that he was on, and by the time I was done, I was too angry to be able to tell whether he deserved just the one bad mark, or more than one. Things that are Not Done: hanging up on the person without thanking them for their time. Things that he did? Yeah, that.
In comparison, even the nest of gigglefaces over on $ISSUE_SIDE_JOB were a cakewalk, even with all they were doing wrong.