Lumberyard quest bug

The foreman in the lumberyard wouldn't give a duergar a-p the quest for killing the vermin, I tried multiple things, I was not invis he was awake, I went on the newbie channel and asked if I was doing something wrong. The quest didn't show up on my quest in progress. also if I killed some rats before hand and came back I would not get the money for doing so,but when I killed the foreman, and checked my quests it was added to the failed portion of the quest list. This has happened to a few other of my chars I have noticed the quest doesn't show up on the list but when I reach level 11 it says I have failed it. the Chars Name is *snip* thanks in advance.