Best place to get advice is to ask a fellow guild member, or a citizen (of Merc).
If they can't help then move cities.
Sorry to be harsh,but i don't think the public BB is the place for this discussion.
BTW the fire fails to light because someone has performed the quest recently. You have to wait until it resets.
Ulukai (who breaks his own rules within 3 lines of posting them)
Written by my hand on the 27th of Midwinter, in the year 1015.