Your message is a period of time that they are forced to wait through in order to do what they called to do in the first place — relay information to you.
Voicemail messages that are deleted have the same theme – each of them is trying to sell something or get an appointment with the customer. What the listener hears is a monologue as you describe who you are, where you work, what products/services you offer, plus the features and benefits of it.

Humor also leaves a lot of room for misinterpretation—which subsequently weakens sincerity and authority. A caller can be very turned off by merely misinterpreting your joke. Why take this risk? Additionally, this could even cause callers to question your character. Say, for example, the president of a company’s mobile phone voicemail greeting was funny. What’s to happen if the caller didn’t like or get the joke? What if they found it offensive? Another scenario is that a caller is reaching out to you for the first time—i.e. they have no idea regarding your personality. What next? The point is, with this type of greeting, humor is bound to be more divisive so just avoid it altogether. c. Poorly Pacing Your Message and Bad Time Management: Don’t speed through your message. Speak clearly so callers know what to include in their message and when to leave the message. At the same time, don’t drag your message out. No one wants to sit through a diatribe. Just get to the point clearly.
15 Professional Voicemail Greeting Samples 1. Company Voicemail Greeting Samples “Hello. Thank you for calling [Company Name]. All of our representatives are currently assisting other callers. Please remain on the line for the next available representative, or press [number] if you would like to leave your phone number for a call-back. Thank