Who called from 9725915910

Has called us multiples times the past few days and always hangs up when I answer.

Also says non-working when I try and call it back...

multiple calls.  never leaves a voice mail.  I answered this time and there was just an odd tone sound and then it disconnected.  I did not attempt to call it back and have blocked this number.

This has been going on for months with me. Roofing company, building company, etc.  When I start asking where they got the number, they hang up.  I have the number blocked now.