Jaya Dent Supply Stole my $450 for Diabetic Test Strips. Has not refunded money after repeated requests. Jakarta Internet

Sent this company named : Jaya Dent Supply" $450 to purchase 50 boxes of diabetic test strips. This scam company is located in Jakata, Indonesia. They only wanted to get paid by bank wire. I sent them the money on 8-30-12 by wire. Seems like some man named: Daftar Ulang is the owner of this scam company. A few days later a person named "Doni
Armando" from this company emailed me the following:

Dear Sir

Hello sir , how are you Today ?? Today we already try to send your order . But sorry sir , we can't send send your order because we have problem for the shipping costs and tax to your country . The costs of the sending to
your country is very high . The costs of the sending for 50 units not much different for the costs of the sending for 200 units because can wrap in one package , So if we only send your order 50 units we will get lose money for the costs of the sending and tax to your country , because the price have we give very cheap and not balance with the costs of the sending and tax to your country . So we hope you can understand for this situation and we hope you can help for this first business . So my Manager give the solution for this business :
1.
Please buy 150 units again so total your order 200 units , so if you agree we will send you the new proforma invoice for 150 units .
2 .
If you only buy 50 units please make the extra payment USD 330 for the costs of the sending and tax to your country , so we can send your first order 50 units .
3. If you can accept our Manager solution , please let me know your complete detail bank , so we can refund your payment .

SO please let me know your decision sir !
Hearing from you soon

Best Regards
Sales

I have tried numerous times to demand a refund since I am not going to pay more. They have not responded to any of my emails. There is no phone number for them. I am a victim of fraud. What can I do to get my money back?