3.) La persona con la que intenta contactar sigue ocupada con otro cliente. Para evitar largas esperas le invitamos a que nos facilite sus datos de contacto y su petición. Le contactaremos lo antes posible durante nuestro horario de oficina. ¡Muchas gracias!
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.

2.) Уважаемый Абонент. К сожалению, все наши представители заняты обслуживанием других клиентов. Пожалуйста, подождите. Спасибо
Provide an emergency phone number. If you are going to be unavailable for a long period of time, let your callers know who they can contact for immediate assistance.