We just received this call for the first time tonight at 8:45pm. Haven't tried calling back, but I don't think we'll bother, especially after reading all of these comments, because if they told either of us that they'd kill us like they did with another caller, we'd have to get really stupid...I'm going to *60 (block) the number now.
I get a call at least once a day from 231-224-2000. The same story as everyone else. You answer and they hang up or they hang up if the answering machine comes on.
Received a call last night, they hung up. CID says CCI 101. Called again a few minutes ago so I called the number back a couple of times. Like others, I go various voice messages. Then I googled them and got this website, so I know I'm not alone. Found this link to complain to the FCC at whocalledus.us >> http://svartifoss2.fcc.gov/cib/fcc475.cfm