MFC Unfair credit assessment using wrong outdated information

I app**** for car finance to MFC and to my horror. My application was denied as high risk reason: Client under debt review. What shoucks me is that my debt counsellor provided Nedbank a while bank with clearance certificate and all creditors, credit bureaus and NCR accepted the letter and updated my profile to remove debt review. This included Nedbank. They went so far as to write a letter to inform me that their records are update. But when Nedbank has to properly and fairly review my finance application, they raise a debt review reason. I this this is unfair credit practice for credit provider not to fairly assess a consumer credit application. This is total horror and unfair and discriminatory practice. To make matter worse I bank with Nedbank and even have a homeloan with the same finance institution. The only thing they want to offer me is a credit card. I wrote to Manager Credit to raise the matter as I can not seem to get hold of him on phone. Can anybody in this institution please provide clarity so that I can know that I must also consider moving my salary away from this bank.