Who called from 4075439750

This # called 5 times and there was no response each time I answered, howeve there was someone there, the name on the ID "unavailable"

Annoying calls from this number with no way to call them back.   We do not owe anyone
money.  Wish to stop these harrassing calls.

Has called about 3 times. Doesn't leave a message.

Called 5 times today and yesterday.  No one on line when I answer, they don't leave message.

Has repeatedly called for the last three days, when I answer no one is there.If you call the number you get nothing, not even a ring tone. The name on the ID is Out of Area.  Wish they would get out of my Area!!!!!