Okay, try to settle down - I know how frustrating it is when you can't find a quest giver you need or have a problem that no one seems to be able to address but ranting and abusing SE and GMs is not the way to go about it (all that does will most likely get you a forum ban and your account possibly suspended as well).

Looking here, it's likely your problem is caused because the next main scenario quest is given by Bowlord Lewin who is actually not found on the main map, but is in his own special area found in a locked room inside the ARC's Guild at New Gridania (it's the same place you got the previous main quest from).

Return to the ARC's Guild and head to the locked door at the end of the corridor right in the back of the building, speak to the woman guarding the door to be let inside, and then once inside the room (the music should change and the area title changes to 'Seat of the First Bow'), speak to Lewin behind the desk to pick up where you left off.

If this doesn't fix your problem, I'm afraid there is nothing else anyone can do for you (as it might be a bug).