Keep in mind that short greetings are often much better then trying to say way too much that could confuse your callers. Some pointers to ask, “please leave your name and number”, or maybe ask them to go your business website to contact you by email, or even as simple as text.
Voicemail greetings for business have to be very clear, precise, and to the point. Businessmen tend to avoid frivolous talks, so it is important that you stick to the basics. On the other hand, you can be funny or a little less formal while recording a voicemail for your friends and family. However, remember to adhere to voicemail etiquette while recording these greetings. So, this is where I sign out. Leave a message, I mean a comment if you like my voicemail greeting suggestions!

-Hello. I’m sorry I didn’t answer your call. I’m just waiting for more important people to call. If I hear your message and deem you worthy of the title “important,” I will think about calling you back, but for now. Bye! -Beep-
I can't come to the phone now. So if, well, actually, I can come to the phone now. I mean, like, I'm at the phone now, recording this message, but I'm doing this now, while you're listening to it later. Except for you I guess it's now, like, when you're listening to it. I mean, like, wait.