Who called from 5712235679

This number calls me day and night, however, when I call back, it just rings and rings.

I have the same  issue  with this number. It keeps calling and I don't have any idea who it is. Send a text for a response or explanation but i get nothing. Its really annoying!

Number keeps calling over and over when answer no one is there.

I have been getting incessant calls from this number over the past week, including calls after 7 p.m. I've only answered once, but there was no one there. The calls seem to drop after one ring.

This, number calls 3x day , noone on line if i answer. I need to block it