Dude, let's be smart about this. You're ordering illegal shit. There is no need to chase it down.
Take it as a lesson learned and get a po box. Obviously your postman delivered it to the wrong address and it got in one of your neighbor's hands. The fact that they never gave it to you means your...
Throwing him a nice card with some cash is a good idea a couple times a year. You'll be surprised what a little gesture like that will do in the future. He'll always be looking out for you in the future.