From the home screen, tap Phone. Note: The call blocking feature may not affect phone calls made or received via third-party apps installed on your device. Please contact third party app developers for assistance with such applications.
Press the Menu key.
Tap Settings.
Tap Call.
Tap Call rejection.
Tap Auto reject list.
To add a number to the Auto reject list, tap the Add icon.
Enter the desired number, then tap SAVE.
To remove a number from the Auto reject list, tap the Delete icon.