Worst service

i am very disappointed at how fnb treated me as a client.all my accounts where blocked since last Friday because someone paid R2500 wrongly in my account .only to discover that even my fnb business account is also closed. I was told to sign a form to refund the money which i did . until now am unable to buy my kids food. Am been taken from pila to post calls been dropped on my ear. I am frustrated and just need to access my own money pls