Who called from 5702351359

I keep getting strange hang up phone calls from this number .. all times of day and night. I'm not able to call them back either and when I block the phone number it seems to just cycle thru to another 570-235 - xxxx number. Seems suspicous to me

How long have you been getting them?  Mine just started on 4/18 but I have the same situation.

I first received a call from this number asking for a moment of my time.  I declined. Since then I keep receiving calls from the above number.  When I answer the phone they just hang up.

The keep calling and hanging up.