Caller ID generally saves me from this kind of crap, but as an IT professional I think I could have lots of fun convincing them to hang up on me if they caught me in a mischievous time-wasting mood. Of course it wouldn't be constructive at all (except for the time I was preventing the scumbag for searching for someone innocent to call) but I might get a good story to share with my fellow geeks.
Il Carriaggio — 1975 Argosy 24 | Il Progetto — 1976 Argosy 28 Center Bath | WBCCI# 15566
He has all of the virtues I dislike and none of the vices I admire. — Sir Winston Churchill