You'll need to have ordered Call Barring from us. If don't have it just click on Contact us on the right of this page..
If you do have it, make sure you're using it correctly. See Using Call Barring.
Check to see if it's already in use:
- To check if all incoming calls are already barred, dial *#261#
- To check if all outgoing calls are already barred, dial *#34#