Amazon delivery just called me on my phone, and when I picked up and said "Hello?" they hung up on me. Looked out the window and only saw their van driving away. They didn't ring at the door or leave a note either.
Called the Amazon support and asked them what all that was about and they promised to make the driver return with my parcel at the end of his shift.
...and he really just showed up.
I'm still a bit confused by all that, but alas, at least I got that package before the weekend!