As far as I know, this is one of those "Oh crap" scenarios. Quests and server disconnects are quite disastrous together, and many people are stuck with uncompleted quests like this. Unfortunately Game Masters cannot discard quests for players, as it requires access to the database. Eventually there should be a quest wipe that will let people start anew (it will probably only wipe uncompleted quests from the record). In the meantime, all we can do is apologize for the inconvenience :<