Sometimes, it’s best to pick up the phone instead or have a face-to-face meeting if the tone or topic of the email is emotional, terse, or needs a lengthy discussion. Responding to workplace texts: You don’t have to have the last word. But if you need to say thanks or okay, say ‘thank you’ or ‘okay’ rather than ‘thankU’ or ‘k.’
Typically, most of these services are uniform—i.e. include the same tools and features (send a script, they record it in a tone you approve, they send it as a file, you supply any feedback, etc.); however, there are some services that go above and beyond. For example, VoiceOverPro, is a single voice professional who records 30 second voicemail messages based on users’ scripts. This is standard; however, users also have options like adding music, recording up to 60 seconds (or 150 words), rush, 2-day turnaround, and even same day delivery.

Expanding on the simple approach above, let the caller know who they've reached. This will not only eliminate people leaving voicemails by mistake, but it will reassure the caller that they have called the number they intended.
As mentioned above, it is extremely important to have a voicemail message that is easy to understand. However, there is also the matter of word choice. You must ensure to give attention to what your words are in your voicemail greetings. There can be certain words used that may trigger your customers. Though you did not mean what they understood, it will still bring a bad name to your company’s reputation. Your choice of words can affect significantly, so make you give close attention to your words.