Received a call a few minutes ago.  They identified themselves as Google Law Firm.  They wanted to schedule a free demonstration that would help place our law firm at the top of Google Searches.  I had a few minutes to kill, so I let them talk a little bit.  I then told them we were not interested.  They came back with a response about us not interested in boosting our advertising and getting new clients.  We went back and forth about 3 more times and I finally said "Ok, now you're wasting my time.  I've told you several times we're not interested.  Goodbye!" and I hung up the phone on them.  When I can, I try answering these calls then research the number.  I then give the secretaries a heads up so they know to look out for that number on Caller ID and know it's not a client/potential client call.