Just received a call from this number.  When I answered they hung up

I did the same.  Except I farted loudly into the phone after about 5 minutes.

Same here, they called and did not have a chance to leave a message with their robot dialing system because I have Sentry's ver. 2 call blocker. It's not perfect, but I believe it's the best on the market. I don't get anything in return for this plug, just trying to help people who are sick and tired of these scum bags that call. If interested check the reviews out at Amazon. Visit http://www.plugnblock.com and go to the Sentry ver. 2 section. There will be a link to the Amazon site for to to review and buy.

google "call blocker".
buy one on amazon or ebay for $39, and you will be enjoying peace and quiet.
mine blocks 1500 numbers and ten area codes.
my second unit blocks ten more area codes that I have the most scammers calling from.
did you know you can use multiple units connected to the same line!
you can also enter partial area codes. I entered 9 and all area codes 9xx are blocked.
that is millions of scammers.

If these people are so up and up then why don't they use  a caller ID that announces who they are?  I don't answer the phone unless there is a number with a name of person or business...keep calling I won't answer...and if you're so great of a business that can help me why don't you IDENTIFY your wonderful company you feel that I need.