Have received between 6-8 calls already this morning and it's not even Noon yet.  Each time a call comes in, another person from the same number calls right behind them.  On the last call that came in, the caller stated she was calling from Cortera Corporation and she wanted to speak to our Credit Department Manager.  The very next caller asked for the same person and when I told her that someone else from her company just called and asked for the same person, she hung up on me.  Every day they call.  Every day they ask for different departments and different people.  Every time I put their call through they get voicemail.  If they leave a voicemail message and don't ever receive a return phone call, I wish they would get a clue ... nobody here wants to talk with them.  Please stop calling here and wasting our time.

Caller asked for "the controller". When I asked for her name and company, she hung up.

When I answered there was only dead air.

Got a call from a woman with a heavy Indian accent calling for someone else.  Weird.  
Caller ID says its Voice4net.

No message left.  Gotta love Called ID!