By using call divert or forwarding feature you can move your calls to another desired number. See below how to forword calls =>

To forward all calls
To start, enter **21*number #
To stop, enter ##21#

To forward calls while you're speaking to someone else
To start, enter **67*number #
To stop, enter ##67#

To forward calls if you don't answer the incoming caller within 30 seconds
To start, enter **61*number #
To stop, enter ##61#

To forward calls if your cell phone is switched off or is out of reach
To start, enter **621*number #
To stop, enter ##62#

To cancel all preset conditions
enter ##002#
The number is which you wants to your call will move on.
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To ensure that your phone is not being misused by anyone you can bar all incoming and outgoing calls. This feature is a network dependent, your operator may not allow you to do this & you can concern your operator about this feature.
To activate call barring, you may have to a password which provided by operator, you first need to deactivate call forwarding.
Here's how you can bar calls:

To bar all incoming calls

To start, enter *35* password #

To stop, enter #35* password #

To bar all outgoing calls

To start, enter *33* password #

To stop, enter #33* password #

To bar all outgoing ISD calls

To start, enter *331 password #

To stop, enter #331 password #

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