Who called from 3149252027

This number calls twice daily, waits to hear my voicemail greeting, then never leaves a message.
I don't know who it is but they are a spammer.

The have been calling me several times a day. No message, no information. Really annoying!

Called several times this week, once or twice a day,  no messages ever.

Answered, waited 3 seconds. Put on mute. No message, just hello. Called back after 4 missed calls - St. Louis public radio during fund drive

Calls several times a week.  Never leaves a message.