USING OLD ADDRESS FOR STATEMENTS

After numerous calls, I fail to understand why Nedbank will not send statements to my correct addresses. For such a huge banking institution where my credit card statements are sent correctly from the same bank, why do you continue to use my old residential address that I have not lived in since 2008???? Now somebody else has access to my personal details! When applying for a loan, you insist on proof of residence yet don't use the address. I am tired of requesting statements every few months, it is my consumer right to have these delivered to me correctly!