How can I disable my Quick Forward?

From VoiceMailTel

1. For Digital Phone Line connected to VoiceMailTel's system:
- press * -> wait for the menu to begin -> press 2 -> enter your extension -> enter your extension's password -> press 0

2. For other devices (cell or analog phones):
- call your company's main phone number -> wait for the main greeting to begin -> press * -> wait for the menu to begin -> press 2 -> enter your extension -> enter your password -> press 0