Letdown by our CSDP

I am trying to effect a Change in my Banking Details for the Past two weeks without success. I have fulfilled all the requirements and provided Proof of Account Details from Capitec Bank Lt plus a Certified Copy of my Identity Document as was required, still I am without confirmation of finality of this matter . I am constantly being shove from Pillar to Post, always dealing with different emails from departments, they seems not to have a dedicated department dealing with changes of Banking details, consequently we as Shareholder are being terribly letdown by CSDP via protracted communications with different Individuals and departments of our nominated CSDP.