I got one tonight..listened to the recorded msg. several times. Notice they don't say WHO they were trying to reach..no personal name.  Say something about having won a car..but later say one of four major prizes.  He also said he had tried repeatedly to reach us, but that is not true in that our caller ID would have picked it up..and he certainly had not left any messages previously either.    Any contests I might have signed up for would be online..with my email info...and from major companies.  I don't trust any of this and do not intend to return the call.