Called today, September 1st 2015 at 5:15 PM and CID displayed "unavailable 301-804-9117" and as usual no VM was left. I looked this number up and 800 notes shows that it's from "Aspen Hill, Besthesda, Bowie" area of MD. I guess these slim balls will never give up. I don't answer my phone from numbers that I don't recognize regardless of who is calling and since no VM was left the call wasn't important to begin with. Even if a VM is left, that doesn't guarantee a return phone call either.
I suspect that it's either the duct cleaning service or our famous F.O.P.'s calling again as a majority of thier calls come from that particular area of Maryland. Of course, it could be anybody but I'm willing to bet that it's one of the two listed above.