There was about 0.0% chance this bill would actually do something. Your carrier knows (for the most part, VOIP services are muddy sometimes) where the call originates from, the phone system was designed around this tenet because Ma Bell wanted to be able to bill you for the services you used. Ma was very meticulous about this, she wanted to make sure you were billed for EXACTLY what you used, nothing less. While there's no perfect solution, being able to identify the call from the calling country or service, forcing carriers to disallow spoofing, and forcing carriers to allow wholesale blacklisting of area codes and out-of-country calls/VOIP services would go a long way in combating this. I know that certain organizations would cry (law enforcement, medical, etc.) but they had their chance to ask for meaningful change. I simply block all calls not in my contact list with something that silently drops the call. I never see them.