Wanting to sell our company employee benefits.  Keep called after we tell them we are not interested.

This person calls about 2 times per business day.  They've been calling me since 3/19/09 and haven't stopped.  They NEVER leave a message. Never.

Comes up on caller id as Vista National.  Has been calling 1-2 times a day to my business number for well over a year - never leaves a message.  It's a battle of wits.  I'll call them back if they leave a message and tell them I'm not interested, but if what they have to say is not important enough to leave a message, my time is too valuable to take a minute and talk to them.