3.) Bem-vindo a John Doe. No momento não podemos atender a sua ligação ou você está nos ligando fora do horário comercial. Por favor, deixe uma mensagem com seu nome e número de telefone que vamos ligá-lo de volta o mais rápido possível. Obrigado e até breve.
Users often don’t invest enough time into their messages, resulting in incomplete, unprofessional, or otherwise under-whelming greetings. Sure, crafting a greeting doesn’t sound all that complicated; however, there are a number of pitfalls users can fall into—i.e. informality, terseness, sincerity, lack of direction, and more. While none of these sound too catastrophic, they are often interrelated. As such, they tend to worsen any problem. For example, humor can cause informality, worsen ambiguity, and weaken sincerity. That being said, users should strive to avoid ALL these pitfalls.

1. Personal Business Voicemail Greetings. Hello! You’ve reached (insert company name.) This is (insert name) in the (insert department.) My apologizes for not being available to take your call, but I’m on the line helping another customer (insert business’s most attractive result or purpose point.)
After all, a professional voicemail recording boosts your credibility, makes you seem more competent, and encourages whoever's listening to it to continue the relationship.