That's where Slydial comes in. It's a service that lets a caller go directly into a mobile number's voicemail. Even better, the basic service is free, and no signup is required to use it unless you need more functionality.
For pure salaciousness, it's hard to top the tape of "A Single Woman." It says: "Hi. I'm tied up at the moment. Please leave your name and number. I'll call you when I'm freed."

Choose from male or female voice talent, and from multiple voice tones including natural, energetic and professional. Select one that best suits your brand and industry. Our Voice Artists are some of the most experienced in Australia and have produced countless voice overs including TV and Radio Ads.
Business professionals are also encouraged to keep their voicemail organized. Delete any messages from the office phone that are no longer necessary after calls are returned, and write down any phone numbers that are needed at the time the message is listened to. If modern voicemail service is utilized, such as that supplied by Voicemail Office, in which voicemail and fax messages are received in a staff member’s email inbox, the individual should write a short explanation in the body of the email if forwarding any voicemail messages to other staff members.