Yup. When I get a package by USPS it is thrown on the ground next to my mail box, hung on my plastic flag until it breaks off. Lays in the rain or snow even when it will fit in my large rural mailbox. Complaining does no good. I try to get everything by ups or fedx and they put it under cover on the porch.
You're lucky. They throw mine on my deck in back as I requested. Only problem is that they walk around the side of the house closest to the mailbox and toss it about 15 feet onto my deck instead of walking around the other side, another 8 to 10 feet, where they can gently set it on the deck. I happened to be walking outside when I heard a rather loud "thud" and found the nice eprom programmer I had ordered lying on the deck. Shaking the box, I heard ominous rattles coming from inside. USPS STRIKES AGAIN! That wasn't the first time that happened but it sure was the LAST!
And, for me, complaining only insures that, next time, they'll try even harder... to do MORE damage.