Account put on hold

I was called by a lady on Monday afternoon to say they wanted the source of my funds. She never mentioned my account would be put on hold. Well it was put on hold since Monday afternoon. On Tuesday I submitted the documents with the affidavit that the lady told me how they want it written. On Wednesday they sent an email to request for a supplementary affidavit with more details which I did submit on the day. Till today my account is still on hold and I don’t have money for transport, food etc and the worst part is I have 2 kids that are dependant on me and I cannot provide for them. Is this how FNB treat its client and expects them to stay with them? I have not received any form of communication to let me know what’s the hold up despite the numerous calls I made and I was told they are escalating the emails. To be honest, once this is done I want out from this bank! They don’t care about their clients at all