Incompetency!!!!!

What on earth is the meaning of this FNB South Africa! I sold goods to someone and she paid me! How on earth am I suppose to know if she had a problem with her account or am I suppose to ask a customer what’s the source of her funds? You locked my account for about 3 weeks and no response! You asked me to send some documents to prove that I sold goods to her and I did instantly but still my account is still locked! This is going to about 1 month!!! I can’t pay salaries, all my debit orders kept on piling, companies kept on calling me for their monthly debit! What kind of bank is this??? The fact that I am also a private wealth client does not even help at all. Is any of this my fault??? If you want to conduct your investigation you should be able to do it within days and not making me suffer for what I know nothing about!!! I have been to your bank severally to complain but no one wants to help. If you know you don’t want me to bank with you guys anymore please refund all my money. How on earth do you expect someone’s account to be locked for over 3 weeks going to one month to survive. What I have in that account is way more than the amount the buyer of the goods sent to me so why must I suffer for something I don’t know anything about!!!!!! You guys are just a disgrace!!!! Unlock my account or better refund my money and let me go to another bank!!!!