Security questions!!! Why can I never pass my own security!?!?!

Shocking experience!! I cannot pass the security questions. Ive tried 4 times now. They must have some incorrect info on me, yet they cannot tell what info is incorrect, so I cannot address and fix it. In fact I saw some of it at enquiries at the bank, but they couldnt update it They tell me some of the info comes from third parties, like government?? They trust them for the info? They cannot even tell me what physical address they have on record for me!! Catch 22 - call centre therefore useless to me completely. What a shambles! Seriously Standard Bank!