Bad service

I am a client with Standard bank but right now Im not very happy. 2 weeks ago I lodged a complaint with Standard bank that someone accessed my personal and business bank statements and my private finances are being discussed with strangers. I asked the bank to look into this matter as to how my bank statements were leaked without my authorization. I was given 2 reference numbers and ever since the 15th of July to date I have been phoning the call centre daily and talking to different people people whom all the time I have to explain what happened. At times I hold for a good 20 minutes only to be transferred to another dept to hold for a further 15 minutes. At times I get rude responses like the last time I called and I spoke to a lady by the name of Meghan or Morgan. I have spoken to Darrel at the investigations dept who told me that my concerns are justified they are still investigating. I need Standard bank to tell me if they will only help me if money gets ****** from my account cause surely its going to happen if people have access to my bank statements under their watch. I want them to close all my four accounts cause I am afraid to bank freely.