I got the same call July 11 th ! I figured it was a scam and it had the same exact wording like you wrote I feel better now even though I knew it was a scam it still always scares me at first.
Called my cell. No msg. Found this info on Whitepages.com---
Spam/Fraud Potential: High Risk
close
Spam Reports
4
Calls Detected
50
Whitepages Searches
13
my number may have been used for something, hungup, I went outside for 10 min and as I walked in the door the phone rang, amazing, could it be someone is watching?