4/17/15  9:10 PDT  Here we go again.  Unidentified caller, obviously auto-dialed and young female voice saying hello to voicemail as if expecting it to answer her.

Robodialer.

5/14/15 9:17 PDT  Essentially same as previous report except this time rather than a female voice it is a rather dull sounding male voice expecting a response from addressing VM.  At least whoever this is gave me a break of 1 month.