Even if caller id had been used in this situation, he could have easily spoofed the number to appear to be coming from the neighbors house since they would have

Even if caller id had been used in this situation, he could have easily spoofed the number to appear to be coming from the neighbors house since they would have already had all the information necessary to do so. The Caller ID system you're thinking of simply does not exist. The current system is much to easy too spoof. Anyone with $15 and a VoIP number can do it.