Who called from 3145586695

calls coming in at 5ish.  No message left behind

No message left on my phone, several calls.
I called auto attendant stated they are "Donor ?? Division of " and do work for many charities...blah, blah, no names I knew.  They gave their hours, I called within the hours and no one answered...

Calls weekdays AND weekends, day evening, early, late, never leaves message.  We are on NO CALL list, so who is this?

These people won't stop.  They will call numerous times a day all day long.

i am on do not call list