This is a trick..... DO NOT CALL THEM BACK!!!! You will be charged crazy amounts for each minute..... FYI they will transfer your line up to 10 times in a minute.... this will charge you $79.95 for each transfer, because once you are on the line it is considered 1 minute.If you made a call back call your carrier and have them removed the charges.
The originators of these calls are not in the United States so it's irrelevant if you are on the federal "do not call" list. Besides criminals don't abide by laws. Be proactive. Don't answer the call. If you did and you are worried give your phone service provider a call and let them know. They will notate it and you won't have to fight any crazy charges later. It will probably take less time than it took for you to google this phone number and read all these posts.
Got a new phone this week complete with a new phone number, other than 2 test calls, haven't told anyone my number let alone that I bought a new number. Saw I had a missed call and it was from this number, google brought me here. Some scamming robo call it seems