They may be way to annoying but all you have to say is sorry I'm not interested and they go away...til next time. What's wrong with people today that you cant be pleasant and realise that some do what they do because they have/want to??? I suppose you swear and curse at telemarketers too because they are so damn annoying!!!!
No matter how much you swear and curse at these guys they will just politely retreat and not offer back...picture that in your head! **shakes head**