I answer phone and they hang up

It's a solicitor from "something filtration".

405-384-5200 Bethany, OK called me this evening, July 23, 2008.  They said they were doing a survey in our area (Norman, OK) regarding appliances and wanted to know what brand of refrigerator we owned in our home.  I declined and told him I did not want to answer this survey and said good-bye.  The caller (male) was courteous.  I should have said I was on the no calling list.