High Bid Auction

I have been trying to get in touch with the auction copnany for the last 8 days by phone about a coin I bid on lot# *** half dollar. they will not answer the phone. it says their voice box is not setup yet . there is no other phone # to call or another person name to contact what a sham. and now the sale is tonight 1/28/20 and there is nothing I can do about my problem thanks to their

Its VERY simple, I was sold a watch as 14kt solid gold and its not which can be verified. I asked to return it and was told to *** off and that he was not going to be out that money. A chargeback will be filed.