Called twice within 60 seconds.  Hung up first time, second time left message stating "I'm calling from U.S. Medical Services.  Please call back."  This is probably another company trying to sell me prescription drugs over the phone.  They somehow got my number several years ago and the calls have come in multiple times a day ever since.  I used to try to fight back, but for the past 2 years now I just don't ever answer the phone unless it is a name that I personally know.  It doesn't matter what you do, after 5+ years of receiving these calls I now know there is no way to make them stop.