mm - Hermes.
I had a terrible problem a while ago - maybe similar to yours.
For days they kept showing that they had made delivery attempts (3 or 4) and this looked like blatant lying as I was in all the times. Wasting my days as they kept telling me they were coming on those days.
Yes - it's all but impossible to contact them normally - they are geared up to their customers, the folks who pay them, not the muggins expecting the stuff.
In the end I did their job for them, went online, changed it to a click and collect, then walked to my local sainsburys which they did manage to find.
Later when I looked at their attempted delivery logs I noticed that they had a pic of the door they had been to.
Turns out it's the block of flats behind me on a separate road - the nits had repeatedly been misled by an oddity of googlemaps on the postcode and didn't have the gumption to look at the actual printed address on the package, a map, or count their toes and balls.
The sad postscript to this was that the delivery was from an esteemed (to me) cycle consumable supplier I found on
ebay. When invited to comment on the experience of my order I made clear my appreciation of the company but said the delivery experience from Hermes was abysmal. They then blocked any future purchases from me on ebay! Bizarre.
Since then (at least pre virus) they have often used the same chap for this patch who actually knows where I am.
So, in short, I'd see if there is any info on this place they seem to have attempted to deliver to and now claim to have delivered to.
A pic?
Quite possible it's the wrong place.
And with the virus, as vickster says, delivery folk are not handing stuff over, not taking signatures, just leaving stuff.
This unfortunately taps into some of Hermes notorious exploits in the past.
I used to see Hermes as the Greek God of chucking stuff over garden walls.
Let us know how you get on.