There are a series of 3 calls, one after the other.  It always shows an "Unknown Caller", no message left.  Obviously spam calls using a program that masks where the call is really coming from.  In the past it has shown Cedar City, Salina, Richfield.  A legitimate business, with legitimate reason for the call, would be identified.  This BS needs to be stopped, identified and appropriate discipline provided.  I'm getting sick and tired of their use of my phone service and intend to file a formal complaint.