I forget who told me do this, but someone said that if you see an unknown number is calling - answer or pick up the call, but DON'T say anything, don't say hello, dont ask "who is this" don't speak at all - wait for the caller to speak up - if its a legitimate call, the person on the other end of the call will make an effort to connect to you."can you hear me? Hello" more often than not - you might hear nothing, or hear someone else hanging up the call. harmless right? Maybe not - it could