Privacy Breach & No Response to My Complaint

I am extremely concerned that Nedbank shared my personal information without my consent. Calls were made to my supervisor about private matters, which is a serious breach of confidentiality. I sent a formal email raising this issue, but it has been ignored. This lack of response is unacceptable and shows poor customer care. I expect urgent feedback, a full explanation, and assurance that my personal information will not be shared again without my written consent.