I mean that you've lumped three different numbers into one post without giving any information as to what happened with any of them? Address collectors are people who call and pretend to be (or actually are) outside and then deliberately leave/don't turn up when they've been told where you are, often claiming to be on their way up/over.

One off unexplained no shows who may be genuine but have had an accident/been intercepted by somebody elss or some other reason why they disappear - we don't post about them partly because the forum would be the size of Google and partly because doing so could lose somebody else money in the event that they're genuine.