Who called from 9313713168

They have called me 3 times in the last 2 days. When I tried calling back, it says the number is out of order....

This number has been calling me the past three times a day and it's not a real number it's out of order

Judging by the posts, which are fairly recent, its prob just a computer sampler, designed to find out which numbers are in service, going on my block list

Just called. I don't know. I didn't answer

I have app on my phone that auto blocks any suspected spam, fraud and Internet dialed calls. I have it set to go to voicemail but could have it set to hang up. Of course no voicemail is left, I am on the do not call list and updated that 3 months ago but still get calls. There should be a way every time these people/places call that they get charged for every call and that money goes to whoever they are callings phone bill.