Now have received two phone calls from a clandestine operation. They call, and then refuse to leave a message!

Clearly, their intentions are sinister. Reverse Lookup didn't provide much info until further research.

Traces back to Wisconsin Marketing Services. Obviously a real bunch of dirtbags.

We return legitimate phone calls. The dopes called exactly at 5:00 pm. Who calls at that hour, when everyone is leaving, then never leaves a msg?

Morons!