I get these calls also... I don't usually answer calls on my cell phone from numbers I don't recognize.. but, my husband accidentally answered it one day.. they asked for me, and the girl was talking so fast, I stopped her and asked her what company was this, and she said "Publishers", and when I asked her how she got my number, she hung up... I thought that would end it, but got another call yesterday, which I did not answer... This is quite annoying!!!
In regards to my comment above, I went to the National Do Not Call Registry website and filed a complaint. If we all do that, maybe, just maybe, the calls will eventually stop.