Happened with my 120 - actually had a few people call me direct as the price was keen.
The site was slow to take it down until I mentioned I had passed their details to UK Police for conspiracy to defraud - it soon went.
UK police were not helpful. First they directed me to a dedicated fraud telephone line. That must be an outsourced system, and because I had not myself parted with money the person on the other end had no interest. Back to UK Police line - no joy, as they told me the fraud line should not have sent me away.
Called a Chief Inspector I know and things were taken a little more seriously after that.
Not seen my aircraft "for sale" for some time now.