A lot of the times it depends on the local post office, my local post office is good about deliveries and I have no complaints about them. On the other hand, when I have had packages that were delivered on a Sunday that USPS gets from Fedex, I have had problems, because that uses the PO in a large town next to mine, and they are notoriously bad (basically, the postmaster on down in that office are sadly every stereotype you can have about a large town post office...I'll leave the rest to the imagination). My experience is the post office with parcel deliveries is a lot better than they ever were, some of that was the competition from Fed Ex and UPS, but these days I think it is because a lot of their business is handling delivery from places like Amazon and other large on-line retailers, either directly or through agreements with Fedex, and there is a lot more accountability with that then there was when it was just a postal customer complaining.
Anyway, getting back to the thread, sorry that happened, but glad the dealer was making good with that, some places would tell you to take it up with the post office, that once they mailed it wasn't their problem, etc. Had a battle like that once with Home Depot with something delivered and it was broken, told me "not my problem" and I had to deal with some freight firm,not fun (on the other hand, I ordered a new set of shower doors from Menards, they came broken, and they took care of it promptly).
