Curiously enough, I haven't done anything.
I get to be a witness.
About two years ago a bunch of numpties took over our local mail service (out-sourcing, public-private partnership all that stuff).
All was well for about 3 months and then parcels started going missing, letters didn't get delivered etc. etc.
You could always be sure that they were helpful in getting you insurance money, but it caused huge inconvenience and no small amount of bad-feeling if your customer didn't get his/her whatever.
I know of at least two of you who didn't get items I sent.
More than a few complained, and after some foot-dragging by OzPost, they sent in an undercover officer to investigate.
Turns out this mob were just raking it off! They'd use the insurance or origin details on the parcels to estimate which would be worth "loosing" and then selling them off to some other crims.
Six months later and this bunch of (allegedly)thieving toe-rags is about to be tried (hangings to good for 'em!) and I get to put in my $.02.
So tomorrow, I'll shower, shave, put on my best 'power' suit and tie and see if I can't help deliver a little 'rough justice' to these (alleged)bum-holes.
Wish me luck!