They called and i answered but they wouldnt say anything. It sounded like they were in a call center

When I answered, just air noise or breathing.  I said "hello" several times.  Was enjoying a nice Sunday morning of no stress.  This reversed all that.  Call was disconnected by caller.  I guess they just wanted to see who was there or if anyone would answer.  I called the number back and a recording said it was a survey.  No option was presented for removing my number or talking to a person.  The recorded message started over.