FNB de*****ing me through bank charges

FNB is ripping me off though bank charges. on the 25th only they have already charged me R120.00 six times. The charges reflects as items unpaid/Unpaid item. My debit orders goes on the 25th since I received my salary on the 25th. I dont remember having a specific time that the debit should be at this time if not I must be charged unpaid item. I received my salary on the 25th of March and FNB already charged me Items unpaid on the same day. How is that possible. To make matters worse, they charge me R120 for a payment of R74.00 imagine. In the midst of this global distress they are contiually increasing the challenges. Singing how can we help you??.. I need my money back all of it by today. You cant charge me for unpaid transactions on the same date I received my salary. What for??