Context does matter here. If the caller would reasonably expect you to answer the phone (such as if they were calling a store or other place of business), an apology for not being able to get to the phone makes the most sense.
Education Details: Users and departments can customize their extensions with their choice of music, messages, and voicemail greetings. Keep your callers on the line with professionally recorded messages on hold. Keep callers engaged by answering frequently asked questions, such as business hours, locations, or directions.

Many messaging apps now offer the ability to send voice messages to contacts without having to make a phone call in the first place. Using this method, you're bypassing a phone call and voicemail entirely, but it serves the same purpose.
These voicemail ideas may not come so easily for some of you. And who says that finding inspiration is a bad thing. It’s natural; not everyone has a funny bone inside them. But that doesn’t mean you get stuck with a boring, cliché greeting. It has to be different and contain some kind of style. And to that, I would like to give you a list of messages. They are perfect alternatives when you want to add some uniqueness to your voicemail. These cool voicemail ideas given below will take the mundane effects off and leave you with fresh sounding voicemail messages. So take a look at some funny greetings that you can use as your funny cell phone voicemail ideas (or home phone).