Calls from this number come at all hours 2-4 times daily. They're from A O Solar in Delaware. I actually got an agent, ALAN, on the phone when I answered this week, and told him to delete my number. I have also blocked his company's number on my phone and you can do the same if you have the proper security feature under "settings," then "phone," then "security." Call your phone company for help in blocking these robodialers at telemarketers from calling you repeatedly and then, when you answer, no one comes on the line for 10 seconds or more. STOP THE MADNESS. BLOCK THE NUISANCE CALLS WITH THE FEATURES ON YOUR CELL PHONE OR ASK YOUR LANDLINE PHONE COMPANY TO ASSIST YOU.