Called at 10:15 today. Caller ID said Name Not Available. I picked up and hung up immediately. Called back on another line. Recording said it is a non working number.

Called again today. Still a non working number on call back.

When I called the number back, a "robot" recorded message stated the number was invalid.

Left a voicemail. Recorded message about duct cleaning. Tried to call back and got "Invalid phone number".

Air duct cleaning special. Nothing is special about this call -- a robocall in violation of the FTC rules, and calling in violation of the DNC list. Call is spoofed VOIP call meaning call blockers will not work.

No reputable business would engage in such conduct -- do not do business with them, do not press 2 to be removed -- likely will confirm your number so they harvest it and sell to other low lifes.

May also be after identity theft.

If you want to do something, report them at https://complaints.donotcall.gov/complaint/complaintcheck.aspx