Noticed that we got a call from this number after 11 PM last night.  The "message" was another silent one.  So I bravely called the number.  Surprisingly someone picked up.  Evidently he was not too familiar with the English language.  I stated our name several times and he only had one word answers.  He finally said "wrong number" in an Indianian accent.  Then I replied "take us off your calling list" and hung up.  

Please quit calling and leaving no message.  You are just making non-work for all of us.