Bank account FICA harassment

Since last year I have constantly been receiving requests to FICA my bank account, which I have comp**** with. Now I am constantly bombarded with the same requests, even after I called the call centre and FICAed my account, a process confirmed by the person I spoke to as completed. These messages are anxiety inducing as they contain threats to block my account, if I dont do something that I have already done. I am disappointed and considering leaving Nedbank despite my over ten year old banking relationship with Nedbank