[Freeswitch-users] Disabling voice mail

Hello, I am a newbie and I'd like to disable the voice mail. All I want is that when calling to 1000-1010 users, the voice mail will not answer in case that the user is not available. Instead, the server will send a standard reject. Is there any simple way to make it through configuration? I was trying to change the dialplans, but it's very confusing and it didn't work. Thank you, Emil.