DHL - we had some kids medicines ordered online - we were on xxx Avenue, dropped it off to xxx Road and put it into a random Recycling Bin (not making this up) so it wouldn't be lifted (as they were worried it would be stolen!). Was 2 kms away from our address and I was at work. I had to ring them and force them to pick it up and deliver it to the correct address. Initially customer service advised me to go and pick it up and didnt see any issues with me going through someones bin!!!
Other time it took me a day to investigate where they left the package as the driver "had many packages" delivered to the same address, so they just left it there.
Generally all courier services are weak - on that note never had any issues with AnPost