Call came in during dinner showing on CID as "Duct Cleaning," from a Colorado Springs area code..did the quick pick up/hang up routine on it and have blocked the number.
Got a call from this number today (1/26/2017) at 11:12 AM. Caller ID showed up as "DUCT CLEANING 1-719-396-6010". Anytime I don't recognize the number, I always let it roll thru to voice mail. The caller, as expected, hung up without leaving any message. I added the number to my phone's Call Block List. I also filed an online complaint with the FTC at: https://complaints.donotcall.gov/complaint/complaintcheck.aspx
Called 1/27/17 @ 10:36 AM MST. Left about a 30-second, somewhat "disjointed" message - almost as if I was hearing one side of a conversation - in what sounded to me like an Indian dialect. Possibly a mis-connected boiler room call.