Rang twice. I did not answer and no VM was left. Never answer any call where you do not know the number and they never leave a VM. Block them if they do it again.
What's going on is, the DNC list is just that - a list. It's not a call blocker so it can't keep you from getting unwanted calls. Only legitimate telemarketers obey it; scammers simply ignore it. Your best bet is to invest in an actual call blocker.
Those that answered and "called it back" .... No disrespect intended, PLEASE help me to understand WHY IN THE WORLD WOULD YOU CALL OR ANSWER a number that you do not recognize???? My daughter does this to and it just baffles me to no end. How happy are you going to be when you get the bill showing you really answered a call from Africa? You are the people (includes my daughter) that are going to hand your confidential information over to those people that send emails about helping them out to retrieve unclaimed millions. Do yourself a favor .... STOP ANSWERING! If it's real or an urgent matter, they will leave you a message. Send the number to your reject list so the call never connects again.