Im getting calls like this too. I don't mind - after all, advertising is advertising - but I'd love to see a copy of the magazine.
I actually got a call from one of the publishers asking my permission to put me in, which I thought was a step forward on their part, but I was in the supermarket at the time, and a little flustered!
But if anyone gets a call like that, then why not let them use the details, but give them a different number? Then you know who are calling from the magazine. I'm going to leave a message detailing all the important info, and if they're still interested, they can call back another time.
Although first of all, I need to find out what magazines Im in! I think I'm in Southern contacts direct, but again, no info about it on the internet.