unfreeze my account

Capitec froze all my accounts and when I went to the branch, I was told its a FICA issue - documents were requested and I submitted on time - the matter is still not resolved as I am being cross-questioned about all transactions on my account despite me having explained to them on an affidavit on how I am obtaining income. This has impacted my life negatively and that of my children. I have given all the information to the very best honesty and still they cannot help me - they keep on cycling me back to back on the same transactions. WORST BANK EVER!!!!!