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.
The first of these is to indicate that the caller who could not reach you is calling the right person. Being cheerful in your voicemail will also have a good impression on your customers. Do not rush to record your voicemail greetings. Speak slowly and clear in your message and record it away from background noise. The more you practice your voicemail greeting, the more useful it will be. Keeping it professional is necessary to survive in today’s World. Therefore, the ability to write a professional Bio holds as much importance as creating a professional voicemail.

Another tactic here is to add some urgency, such as a limited time, to your incentive.
The 8 Rules of Phone Etiquette at Work. Follow these 8 rules for good phone etiquette on the job. Be prepared. Get familiar with your phone, and learn how to transfer calls. Answer right away. Answer within three rings. Announce yourself. "Thanks for calling Company Name" . Be an active listener.