Calls at least every other day.

Received a call from thus number.  Telling me to call and leaving a case number.  But phone went silent when it was stating who call was for.  Is this legit.  Scared to call number back!!  I am unaware of why I woukd even receive a call like this

Received 3 calls from this number.   Always on Friday afternoon.  It is a robot call saying they have an urgent message.  No name is given as to who the call is for.  They claim they have several pending matters and that I need to call to provide my address and current place of employment.  Also mention they are investigating.  Am afraid to call them back.  Believe it is possibly a scam

They call me many times with a recording stating. For me to call back then its another recording that hangs up.

I got the same message as those above.
It's my 2nd call.  I am not responding.