In these cases, it is important to clearly state this and make it as easy as possible for the caller to note the alternative contact details.
When you create a professional voicemail greeting, it can be a good idea to think about what your callers might want to know. After doing so, you can make a list of points to cover in your voice message; it might also be a good idea to write out the entire greeting on a piece of paper. The ideal message should be somewhere between 10 and 20 seconds, so you may want to time yourself repeating your message before you record it. After composing your telephone message, it can be a good idea to get a second opinion of this greeting so you can make sure it sounds professional. Writing down a voicemail greeting helps prevent mistakes when recording it.

Really think about it – You’re out of the office, it’s after business hours, or you’re otherwise indisposed, whatever the case may be, your voicemail is now tasked with representing you (and/or your company). No pressure, right? Your voicemail message is a platform that represents you to callers; therefore it’s ABSOLUTELY crucial that your message is perfect.
2. “Hi! We’re glad you called [company name]. We’re happy to help but we are either on the line with another client or on the go! Please let us know your name, number, and reason for your call today. As soon as we become available, we will call you right back. Thanks!” Ask your callers to leave a short message so you can determine when to return their call.