by leejor » Fri Dec 23, 2011 4:53 pm
I'm not aware of any way to disable the recording of incoming messages.
What you could do is word your message in such a way that they get the idea that they can't leave a message, (this is ABC computers, we are closed today, blah, blah, blah...thank you, and goodbye) then either leave a l o n g pause (dead air) at the end, so they will hang up, or, record a busy signal for a minute or so. That will let them know that they are to not to even try to leave a message.