Originally Posted by The Disco Volante
I suggest:
(a) Explaining politely you would rather they didn't call again and that you don't want to go on a cruise with obese Americans, or
(b) Taking up as much time as possible to discourage them from wasting their time, or
(c) Being as rude as possible (think Hanibal Lecter)
in no particular order

I've never bothered to listen beyond the first 5 seconds. Didn't know you could actually speak to them.