Standard Bank Please update my records with the ITC

I am (or rather was) a surety on my parents' Bond. However the Bond which was originally R270,000 was paid up in MAY 2016. To date my transunion/ ITC records still shows R223,783 as being unpaid. I have been trying to resolve this since October 2017 but I was told it can only be updated when the bond has been transferred to my parents. I have done this and the Lawyer confirmed that it was done. Sent an email to ********** on 24 January 2018 (after being advised by the call centre to do so) to ask that my records be updated and still nothing. I cannot get any credit because of this error yet no one at Standard Bank warrants it important enough to respond to my emails. This is really ridiculous that nearly two years after an account is paid up I am still battling to get Standard Bank to update my credit profile!