These people are a pain! I added the call blocker feature to my phone service and it is great! I get a call like this and I simply add it to my call block list...never hear from them again!
This is just one of many of these calls I get. Since they're not 1 800 numbers, but actual exchanges, why can't our useless when needed but always on top of everything with their C.I.A. and their F.B.I and their F.T.C. government do something about it. After all, this is a scam and occasionally, some people (trusting seniors) will fall for it and give away information that shouldn't be given away to rackets like this.