My in-laws were in Mexico and sold a (what we believe) to be a fraudulent timeshare – with the promise that their original timeshare would be sold. No certificate, or other documentation is available and we are fairly certain this was also a scam (still trying to figure out that situation).
"Owen Hunter" of "Safeguardd" in Delaware contacted them via phone to advise that the timeshare was fraudulent, and that my in-laws could pay a retainer to join a $30M class action lawsuit so they could get their money back. My in-laws sent a bank draft of $1500 USD and a several pieces of ID (including signatures, pictures, and identification numbers) and copies of ownership documents. Owen Hunter continues to call them with "updates" to the case, and starting to request more money to pay court costs. He and his colleagues are now calling my husband (the son) trying to prove their legitimacy by providing a link to the Delaware corporation.
There are warning flags – poor website, use of a "hot desking" address, registering in Delaware (lack of corporate oversight), comic sans font, lack of proof of lawsuit, calling of my husband to "prove themselves", etc.