Who called from 5702831070

I really don't understand I get about 10 calls a day from this # and 4 other telemarketers. Im In NJ and they all are for newspaper subscriptions or other crap. In PA, TX and Other states with strange area codes...

Received a call a little while ago.  No one on the line.

Interesting,

After all this time, I too am getting called two times a week, and I have a new unlisted number, so I have to wonder if these automatic dialers are just randomly calling every number in sequence, or is phone provider selling numbers of new customers?

Sick of the calls.

Never leaves message or says anything when I answer