FNB ITC System

It has been more than six months now since I app**** for business loan and reply has always been a decline due to a judgement on my credit profile that reflects on their ITC system. Despite numerous times proving contrary to their report with trans-union reports and credit rating.....interestingly other institutions concur with trans-union's reports and rating. I am frustrated....why is their system discriminating.....My understanding they should all be drawing credit info from the same central ITC database