USA-Cigarettes USA Cigarettes i sent these guys $84.00 via Western Union for 3 cartons but never received the goods Shenzhen Internet

I placed an order for three cartons on their web site and wired them 84.00 via Western Union as directed. I then received an email reply thanking me for the order and payment but stating that i needed to send them another $84.00 because the minimum order is for six cartons. I replied no way you can't change the rules now, that they needed to fill my original order and if i was satisfiled i would order six the next time. I haven't received the goods nor have i received any replys to my emails. These scam artists are apparently based in China and should be avoided!