Yeah, I remember a friend getting a call during coworking and her face just went white, and after the call she told us that was the tax people calling about irregularities (she had moved countries and was slow in sorting out her tax situation), and we all bought it - there was no sober "oh yeah it's a scam" advice from us - it was really perfectly timed, and took a day or to for her to reason through that it must be a scam. (No money lost though!)