No Customer service and failing to provide simple letter

It happened that last I got unemployed and my personal loan got into arrears and luckily I got another job and made payment arrangements towards the arrears and now I paid up all my arrears and app**** for Vehicle finance, MFC approved my application but on the basis that I provide proof that my account is upto date. I called the personal loan department and was sent all around the departments just for a letter certifying that my account is upto date but failed as they claim that they do not have such letter yet it the same letter required by MFC the same company. All I need is a letter certifying that so I can the contract for my vehicle finance. Very poor service and worst customer service by Nedbank. Never bank with them if you want peace. After so many years I have been with them, 12 years as a customer means nothing to them even though I'm a lifestyle client.