Got a call. No message left

Answered the suspicious call,  nothing there. A  robo call no doubt to be followed by  merchandising stupidity

Calling once a day. Not picking up.
No message left. Call back with blocked number and it's busy.

Scum.

At first same experience as "Annoyed":
"Calling once a day. Not picking up.
No message left. Call back and it's busy."

Finally a message left with breathing on the other line. Had somebody call back from a different number, same busy signal.