FNB says we were 3 months in home loan arrears, this is false. Turn backs on loyal customers

We decided voluntarily to undergo debt counselling for 3 years to settle debts and start afresh. It's been almost a full year since we paid off everything and received full clearance- yet FNB holds this against us to this day. FNB even says we were 3 months in arrears with our home loan - we have proof and it was sent to you last year that we were never in arrears, we have never missed a payment. You turned your backs on us as customers. We are applying for a home loan now, you say we were 3 months in arrears on our home loan. This is incorrect and false information. FNB it is laughable that your "slogan" is "how can we help you," when all you do is NOT help us and provide false information that we were in arrears but never have been and hold a few months of voluntary debt counselling against us. I'm really disgusted after being a customer since I was a child. It's not worth it.