Though we rush packages out the door, when it comes to surface mail that's the end of the rush. Once your package arrives in your own country it has to face customs. Customs officials give priority to airmail shipments because airmail customers are presumably in a bigger hurry than surface mail people. So another week may pass in customs. Then you have your own postal system.
Packages do arrive eventually.
On a statistical basis, lost packages amount to less than one half of one percent of our total volume. If your package is lost, we are happy to replace it. We don't often make mistakes, but it never hurts to check. I've been known to transpose 114 for 144, though not often. Ask your neighbors if they may have received the package for you.