Credit Register

In June me and my wife have been communication with vodacom about a ********** account opened under my wife's name, and vodacom confirmed the account will be closed and the account will be removed from the National Credit Register, we have recently received the latest clear score update an the account still appears on the National Credit Register, when i tried calling the numbers on the letter it goes to the switchboard, from there it's a dead end.

I would like my wife's name to be removed from the National Credit Register as it is impacting badly on my wife's credit score.