I wouldn't blame the whole company for individual worker's faults. USPS has the tendency to state attempted delivery and I never even hear a knock. Fedex throws my package from its truck to my door step. One of the UPS guys always walk up and knock on my door nicely. The tracking number is always delivered at the right time. While other UPS drivers will run up and place a note without knocking or toss the package up to the door step.
It's their policy to at least attempt to deliver every single package. If they left a note or the tracking says some sort of re-delivery, it's to save their own ass.
I'm speaking from over 19 years of shipping through them, business and personal, along with living in multiple parts of the country. Unfortunately it is a broader issue than any one driver or any one rep. Not every egg is rotten but there are far more rotten ones than in any of the other shipping companies I've dealt with regularly which include USPS, FedEx, DHL, and some smaller carriers.