Hello there
I don't have much experience with how these people work, but I had overheard a phone call recently (he forgot I was in bed in the next room with paper thin walls) and heard him talking about 'banging UC' and 'clicking', my experience goes far enough (and reading other mumsnet threads about it) to know that they're something to do with fraud.
I'm very concerned about this, does anyone have better experience in these terms, and how to act?