Bad Customer Service - Cell-C Legal Department.

I have cancelled my cell c contract last year November after I decided not to upgrade the contract, and I was issued with the paid up letter after I requested it. I also requested for the accounted to be deactivated on all credit bureaus, and I was then transferred to the legal department for further assistance. After I spoke to the lady at legal dept. I was told that the updates has been sent to all credit bureaus and after 21 days the account will be inactive. To my shock, to date the account still reflect on all my credit reports with the month instalment amount, this as result has affected me very negatively credit wise and I am utterly disappointed with the level of urgency and professionalism cell c has shown into my concern.