[meyer]

If the same caller called after you told them not to call, you have a case for harassment. Other than that, you do not.

Which is precisely what the list does - it establishes that you don't want them to call. If they do so anyway, it is harassment.

[palmer]

No, harassment is when someone harasses you, not when you think they might. That's why restraining orders (although abused) are not given out routinely. Overuse eventually makes them all trivial.