Recently, I took over my son's LG Optimus Chat. He had Voicemail, but I don't. However, the Voicemail icon is always present. I haven't been able to remove it. When I go to retrieve the message, a message appears that the line is busy. I have tried calling my phone from another phone, but the phone keeps ringing- no opportunity to leave a message as some previous people have been mentioned as a solution. Any ideas?