Useless...
Bought something online and the seller sent it with DHL. After being given a delivery slot and having received a notification email that my parcel was on route nobody showed up to deliver it. The tracking page said they could't locate my address which is ridiculous since my house is on a main road and the from door had a clearly visible, large number on it.
The following day I received another email notification claiming my parcel would be delivered in the next 15 minutes, to ensure the driver doesn't miss me again I sat in front of my house reading a book while waiting for an hour, nobody showed up.
I was home all day on both days and delivery was never attempted. Horrible "service".