It's an out-and-out SCAM which is violting the Do-Not-Call Act.
There is NO area code 390 in the North American network. I also doubt that this call is coming in from Italy, which is Country Code +39.
In North America, ALL three-digit area code combinations with a '9' in the middle digit are RESERVED for use in a future expansion to a "longer-than-ten-digit" North American number. Thus there is NO three-digit area code 390, nor any other N9X format three-digit area code, at least not at this time.
Therefore, this is some obvious $CAM/$CUM trying to evade any regulatory action against unsolicited calls.