Heres some good advice on getting more phone calls returned.

Many calls never get returned because the caller does not give a compelling reason for the other person to call back. They'll say something like, "call me back when you have the time".

If I get a voice mail like this I'm probably not going to call back unless it's someone I really want to talk to or if we have something important happening.

If you are taking time to call someone, then it must be important to you and to them. If it's not important, don't make the call in the first place.

So, assuming your call is important, then act like it and sound like it. When you leave your voice mail message, let them know it's important (and why). Use words and a tone that tell them you're expecting a call back soon. You don't have to be abrasive or overbearing, just assertive and confident. Put some energy into your voice.

Also, let them know the phone call will be short. We're all busy, so people who respect our time are more likely to get some of it. Finally, remember to WIIFM ("What's In It For Me"). Always try to let them know that you're calling with something that will benefit them.