Account locked without notice

At the beginning of this month I tried to make a payment from online banking only to be informed that I cannot debit from this account. I contacted FNB to find out what the issue is and was informed that my account has been locked. The reason for this is that they require my FICA documentation. Firstly, this does not make sense as I have been a client with them for over 2 years thus they have my information. Secondly, I did not receive any request that I need to provide them with any sort of update of this documentation. Still, they just locked my account. To this extent certain debit orders have been blocked and I cannot make any payments. This will also negatively impact my credit rating.<br> <br> Please can someone rectify this, unlock my account, and provide me with proper confirmation that this is due to fault from FNB and not myself, and ensure that my credit score is not negatively affected and that the required debit orders go off.