Put a very good house on market, but refuse to sho...

Put a very good house on market, but refuse to show property to buyers. The next day its sold and they admit purchasing for their own investers. I event tried offer 20% above asking price. That poor seller could have got tens of thousands more but went to the wrong agents. If your the owner of goldfinch drive property. You have been conned. Im not buying from these nor will ever sell.