Hello, you have reached X (service provider). Unfortunately, all our agents are engaged in talking to other customers. You can stay online or to resolve something urgent, try our live chat service. You also have the option of leaving your name, ID and number and our agents will revert to you at the earliest.
If a call happens outside normal business hours, you can create a specific auto-attendant that’ll handle those calls with an alternative greeting message and menu options. An auto-attendant is an excellent option for businesses with regular working hours, but you might need a more robust solution if you plan to offer 24-hour service.

When someone reaches your voicemail, it’s important that you help them confirm that they have reached the right person by providing all of the relevant information that they will need. Who have they reached? Did they contact the right person and the right business? Should they leave a message? When will you get back to them? Is there a better time for them to call?
8.) Bem-vindo ao Departamento de Serviços do John Doe. Infelizmente, todas as linhas estão ocupadas no momento. Por favor deixe uma mensagem após o sinal com seu nome e número de telefone. Vamos ligá-lo de volta o mais rápido possível. Te desejamos um bom dia.