Just got a call from an unknown number and want to call it back to see who it came from. Here's a cool way to dial back that call online without having the user know that you called.
If their voicemail has there company name or name, then you can easily playback their voicemail to see who it is.
Link
If their voicemail has there company name or name, then you can easily playback their voicemail to see who it is.
Link