Well for one I seriously doubt that they rang any of the neighbours doorbells. I live in a block of six flats, SOMEONE must have been in on one of the days! I can't get it delivered at work as I can't get large things home easily on my bike.
Everyone should just use the damn Royal Mail! Remember how it used to be before they sold the Royal Mail off? You could just pick stuff up from the post office! Perfect!
Edit: Also, I would have got it sent to work, but changing the address isn't one of the options, so once I'd put my home, I was stuck just trying the neighbours constantly.