Money taken out of my account twice by FNB without my knowledge

FNB withdrew funds out of my account without my knowledge. They took out money from my account which I was saving for my rent and now I don't have that money refunded to me by FNB. The 2 accounts that they deducted the money for have been sitting with the lawyers. I was unemployed for 2 years and therefore my accounts were handed over. I have agreements with the lawyers handling the accounts with payment plans in place. I just started working after being unemployed for 2 years. Both my parents are unemployed and they are dependant on me. How am I supposed to fulfill all my financial obligations, when FNB is just taking out money from my account. I want to pay my accounts but at the moment I can't just bring it up to date. I will never bank with FNB every again. I'm done with this bank. They do not care about anything but what they want. Because of FNB, I had to cry on my birthday cause they took out more money on that day again.