Man with heavy Indian/Pakistani accent called four times within 15 minutes. First he wanted to speak to whoever is in charge of yellow page advertising. Told him to go to blazes.
Second call I got a bit ruder
Third call I threatened to make life miserable for him
Fourth call he said he was trying to collect on our account. Since we don't advertise I told him to go screw himself.
Received a call from a man with an accent who asked for the owner of the business. I said he was in a meeting and the line went dead. But after reading the comments left on this site I am pretty sure I will tell him where to go the next time he calls. Thanks everyone!