Whether it’s an out-of-stock product, a canceled event, or social media snafu, there are times when your business may see an influx of frustrated callers. While it is important to address their concerns head-on, you may not be able to answer each call as it’s received. Make sure you use best practices for dealing with angry customers, and that your voicemail greeting sets the appropriate tone. Avoid defensive language, validate their concerns, and keep them informed as to how you are handling the situation.
27. Hey, this is [your name], but you should know that already since you called me. I’m obviously not here right now, so I won’t patronize you by telling you what to do after the tone.

For more tips and scripts on professional phone and voicemail greetings, here are some additional blogs: Business Voicemail Greetings: 5 Sample Scripts; Business Voicemail Greetings - 5 Examples for Any Job or Industry; Voicemail Greeting Scripts: Doctor's Office, Law Office, Dental Office
Speaking slowly, clearly, and rhythmically while recording your greeting shows a greater level of confidence an clarity. Try to avoid conversational cadences when recording your greeting. Hi, this is Doctor Claire Rourke with the New Haven Medical Group, and I am not available to take your call. If you're a new patient, leave me a message, but if you're an old patient, please dial the hospital. Thank you. Hi, this is Doctor Claire Rourke with the New Haven Medical Group. [Pause] I am not available to take your call right now. [Pause] If you're a new patient, leave me a message. [Pause] If you're an old patient, please dial the hospital. [Pause] Thank you.