have had experience of this 3 times, but all our mail problem----
1] parcel worth £299 -curtains/bedspread delivered to empty house nearby, left in front of garage o/night rained AND the receipt signature looked like a spider crawled in ink and ran across paper!
2]from US, cardbox parcel left inside garage amongst empty cardboard boxes ,which is hardly ever up, 9mths later husb was burning rubbish and empty boxes when he came across it!! there is a specially painted metal bin for parcels!!
3] from US,was rang from 30 miles away, asked if expecting parcel, my goods AND a broken camera had been opened -presumably in sorting office, and as of no real value were put into a large parcel to get rid of them.
deliverers here are dire and I always make sure that I keep a tab on them.