The Samsung Galaxy S mobile phone allows users to create an auto reject list consisting of all phone numbers that users do not wish to answer calls from. This telephony feature is particularly useful to block unwanted calls from agencies and telemarketers. However, the auto reject list can include any contact from the contacts list. To create an auto reject list, the Auto Reject must be enabled on the Samsung Galaxy S mobile phone. The Auto Reject option is available as part of the Call Settings of the Samsung mobile phone. To create an auto reject list, simply add the phone numbers and save them in the list.
If you don't want to answer calls from a particular contact, you might add their number(s) to an auto reject list.
Here's how to proceed:
From the main screen, select Application > Settings > Call Settings > All Calls > Auto Reject
Tap on "Enable Auto reject"
Select Auto reject list and add the phone number of your choice and tap on save