FICA Account blokced

Last year in August, FNB asked me for documents to FICA my bank account with them or they would block my account, so last year August I sent my documents and my account staid open, now almost a year later they want the documents again and blocked my account, so now I cant pay my creditors! This is the worst service ever! I responded to the person form FNB's email and he did not even respond back, I sent another email and still no response and he said he tried to phone me once and couldn't get hold of me and that was his response when I phoned FNB and spoke to a consultant to try I find out why I didn't get a response. I said to them I sent my documents a year ago and everything was in order, so why does it take them a year later to come back and say my account is not FICA'd??? I told them so they give up trying to get hold of a person after one phone call with no voice message?? I work so I cant always answer my phone at work. Worst bank ever, think I should move my business away from this and find a bank that is actually willing to help their customers!!!