Authenticartauction

I bought a VCA necklace from Authentic Art Auction Inc on Invaluable. A couple of days later I searched for another VCA item between the items of Authentic Art Auction Inc. next auction. Looking at the pictures of their next auction I realized that the same item I bought appeared again with the exactly same serial number and pictures of the item I bought just a couple of says before. Luckily I did not pay for the second item but did for the first one over 9000 USD. Now I know that the item I purchased is a completely fake VCA necklace.
I did emailed Authentic Art Auction Inc about my findings and requested my money to be transferred back but I am afraid that I will loose all my money.
Can anyone help me what could be done in order not to loose all my money?
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