Lost money on a transaction

To whom do i speak to on this board to warn others about this person.

Sent money. Didnt receive parts. Not responding to emails.

If you suspect anything, tell the seller to put it on ebay with a buy it now fixed price and have them send you the link, buy it through Ebay and pay the 5% or whatever to have their protection. If he says "I dont do paypal or Ebay" ask him why not as you'd be paying the fees with the Ebay/paypal transfer. pennies on the dollar and better than nothing.