This is a scam they are useing a spoof number. Record all these calls and go to the police station if more people report these scammers more would be done. Post it on face book let family and friends now about this scam and the fake IRS scam .
Scam did any one get a a real letter people sale working phone numbers to crooks in diffent country's also use common sense and never give nobody info or money over a phone . Sorry but this is a scam