It was one of those calls that says I'm so and so doing a survey, Can you hear me OK?  Hello?  Hello?  then he hung up.  This is one of those calls everyone needs to be on the watch for, don't answer YES or NO, that will really get you into trouble.  I didn't answer, let the answering machine get it, which is set on 2 rings and then picks up and says Hello?  It's amazing what you get on your answering machine with that kind of announcement on it.