I let it roll to voicemail. It's one of those autobot scams where the recording says you're pre-approved by a secret company for a $250k business loan without qualifying or needing to pay back, press 1 to offer up your banking info, etc. My sources say these originate from overseas as part of international terrorism funding campaign. I get about 10 of these a week from new numbers. Blocking them does no good. I think they cycle through thousands of phone numbers a week. I never answer long distance calls I don't recognize.