The most engaging messages are slightly unique in nature. They combine a mix of clever scripting and music. Slight humour is often used to promote a product or service and is usually quite effective. It's also very important to choose both the written and spoken tone that appeals to the characteristics of your audience. If your target market is the younger generation, a script that includes slang words and is quite laid back would be an excellent choice. If your target market is primarily business professionals, then a more articulate choice of words would be more suitable.
4.) Estimado/a cliente/a, ha marcado el número de la compañía xyz. En estos momentos todas nuestras líneas están ocupadas. Le rogamos que tenga paciencia. Le atenderemos lo antes posible en cuanto uno de nuestros ayudantes esté disponible.

There are two types of voicemail greetings that you can set up for extension voicemail and group voicemail: System Global Greeting: A greeting that is applied to extension voicemail or group voicemail by default. Custom Greeting: A greeting that is personalized.
Insurance agents have to deal with large numbers of clients almost all through the year. So, they are extremely busy and cannot take calls of clients. For them resorting to voicemail messages become inevitable. Here is one instance of VOIP phone service for businesses like this: