I wish to stop a certain person in my household from ringing 0900 Premium rate numbers. I have phoned Ntl CS and was told that "Call barring" was available. I was given a pin number and told to press *346# to activate and to use #346* plus pin number to de activate. When I enter *346# I get a recorded message, " Sorry, the service requested is not available on this line".
Anyone know why not