@Edent I once had a scam call from someone claiming they were from the FSA (UK financial regulator) saying they were processing a refund from.... somewhere or other. I started laughing, and asked if my mate Steve had set him up to this, then "go on then, do your script". I kept laughing, he started laughing, trying to get through his scam script.
I explained my wife worked for the regulator and that the FSA regulates companies, not customers.....