Caller hangs up no voice

Caller is running a telephone scam

http://www.theregister.co.uk/2011/03/02/windows_service_scam_queensland/

Is there some way to block this caller. They hang up quickly when you tell that you do not own a computer (haha)

Definately scam - has same call yesterday drom 'overseas' number. So sick of them.

Got a phone call from this number a woman told me she is calling from computer support. She said my computer got error message and she can fix it. She asked me to turn on computer and follow her instructions to fix the problem. I asked what error message she got then she just hang up.

I called back asking what's wrong and she told me my Windows software has problem. I told her I use Mac then she hang up again!

This is definitely a scam. Don't know how to stop them to cheat others!

It's the Windows Technical Department scam - just hang up on them.

Some sort of sales call with foreign folk gabbling in the background.