If it's a trade magazine, why TF won't they talk!!???!! Or leave a message, or even a robo message!??!!??
They CAN'T make money if they don't send anything out.
If they stated their business I'd confirm, and tell them to send the damn advertisement. While many hit the circle file after a quick thumb through, there have been quite a few times that I've found a company that I previously didn't know about and they were selling exactly what I had been looking for.
Called twice today. First time I decided not to wait for a response. Second time, I waited. Called about a free subscription for a medical development magazine. Informed her that we were not in the medical field and we are not interested in the magazine. She hung up.