If someone is listening to your voicemail greeting it's only because they intend to leave you a message. Don't make them listen to 3 minutes of rambling in order to do so. Plus, you're more likely to deliver a clean, professional read if you stick to shorter greetings. If more specific information is needed, direct callers to where they can find it on your website.
The bank blew past its goal of eliminating half of its voice mail boxes and to date has eliminated about two-thirds. Across the whole bank so far, that's over $8 million in annual savings. Coca-Cola recently made a similar move and only 6 percent of employees chose to keep voice mail.

Hi there! You’ve reached [LinkedPhone – Where Freedom Rings!] We’re away at the moment but please leave your name, number, and let us know how we can help you. We’ll make sure the right team gets back to you within [the next 24 hours]. We appreciate your call. Thank you.
8.) Bienvenido/a al Departamento de Atención al cliente de John Doe. Lo sentimos, todas nuestras líneas están ocupadas en este momento. Por favor, deje un mensaje tras escuchar la señal con su nombre y número de teléfono. Le devolveremos la llamada tan pronto como sea posible. Le deseamos que tenga un buen día.