I've been called...
The post master called me once. It was an express that I sent, with my real phone number, as well as the real phone number of the recipient. The post master on the other end asked if he could open the parcel because a damn dog sniffed it, I told him no, and he should call the recipient to ask for permission. He tried to make me say yes, but I held firm. I called the recipient the next day and he said he was never called. I called the post master back and he said he had let the package go ten minutes after calling me. The jist of the story is that when I packed the package I was eating a chicken breast for lunch, probably what stopped the dog in his tracks, and the only thing in the package was a fat caliper and some dated software.... Nothing even close to illegal.
HTH