Marketplace-Trade Dispute Resolution
Here are some formal guidelines to follow when you feel you have been the victim of a bad trader/seller/buyer:
Step 1 - Try to resolve the situation privately. This means more than sending a threatening email and waiting a couple hours for a response. See if some agreement can be made in private that will resolve the situation to the satisfaction of both parties.
Step 2 - Try step 1 again. If you feel like you've given the other person every chance in the world, please consider giving them the benefit of the doubt with one more chance just to make sure.
Step 3 - Contact one of the admins. Matthew Monin (Octavian) is currently in charge of handling disputes in trades and the marketplace. Send geekmail to Octavian with as many details as possible, including links where appropriate and forwarding the email discussions resulting from Steps 1 and 2.
Step 4 - Recognize that you may not get your due. Though admins can sometimes help resolve situations through intervention, if someone is completely unwilling to cooperate there is little that can be done to force compliance. Admins can, however, lock users out of accessing features like the trade manager and the marketplace so if it is determined that someone has abused the system they can be prevented from doing any more business on BGG until they resolve their issues.
Please DO NOT air your grievances in the forums. These things sometimes turn out to be simple misunderstandings and making a public scene benefits nobody in such circumstances. Handle it in private or bring in an admin - please don't take it to the forums.