The caller wanted to speak to the IT manager. She claimed that this was "not a marketing call," but they wanted to set up an appointment with our IT manager.  She refused to provide any information about the name of the business or the nature of the call (beyond the fact that it was "regarding IT services"), and despite my request she would not leave any callback information.

Marketing call.

Voicemail left....just listened to someone type.  No message was left.