Clients dont matter

I have had a good relationship with my bankaccount for the past 5 years. I have been employed and earn a good salary. I don't have any returned debit orders, or never go in arrears on my account. I even opened a small business account 3 months ago and had over R200 000 go thru that account. I have no credit listings, earn a salary of over R20000 pm but still I get declined by my own bank as I am seen as a HIGH risk? Wt hell??? What must one do to be regonised by your own bank? Make a million??? Really feel like moving my accounts elsewhere and start over, what does it matter anyway, don't get anything from Nedbank anyway besides high bankcosts!!!!!!