Violaton of privacy act

A few months ago I've started receiving notifications from an account holder at Standard Bank I am NOT an account holder. I have reported this problem to the Bank's complaint line. Each time they told me that they will look into the problem. Nothing has changed I have blocked and reported the number, but the bank just sends the notification from a new number. Notifications of payments come throught even after midnight. It is disturbing and disruptive. I keep reporting it but they have done nothing to solve the problem!! I keep getting this persons notifications from his purchases and payment. I know where his/her child goes to school ant the name of the child. Thier political alliance and what they pay to a politician. I know what they pay for rent and the agency that they use. I know when thier salary gets paid in and how much they get paid, I know where they work andI can stop thier insurance of thier vehicle if I want to. This violates the privacy act. This bank is supposed to protect thier client. The complaint line keep telling me that they cant remove my phone number and that the client must remove it but this client probably has more than one phone number linked to his account so they will never know that the wrong person is getting thier information. Other banks have solved this issue years ago. Add a client code that is generated by the bank (for example: "ABC123") at the end of each notification and when the wrong person gets a client's notifications the bank can ask for the client code and remove the wrong phone number. This protects thier clients. Other banks have already done this and it works brilliantly.