I threw out another "I'm from Microsoft and you computer's reported a fault" call recently. That was unexpected because I have had none of those for a long time.
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Complaints here about the inertia and complacency of the ICO, but I've little confidence in Action Fraud, too.
You never hear back from it if you make a report, but that might be concerned with security so I can accept that.
My beef with it is that is very awkward and long-winded to use, and is clearly a database of classic form. I.e, written by someone brilliant at writing extremely complicated software while lacking the imagination or initiative to consider the user, and to realise that set menus of a few random questions immediately limits the system's scope.
You might expect it to accept forwarded e-mails for analysis… No! That's too obvious for the Access-jockeys to spot!