Poor management of client data potentially sharing sensitive client data with other clients

Standard Bank’ management of client data is very concerning. My cell number has been used incorrectly on another clients account and despite informing me on numerous occasions about this error and then confirming that this has been resolved this has not happened. I am being contacted by lawyers as this client’s account is in overdraft and to no avail is my details being removed from his account. If I was him I would not be happy with the amount of information that I have about his financial matters. Standard Bank is managing client data very poorly and potentially sharing sensitive information about clients to other clients by not rectifying issues like these immediately.