Get milked in service fees - no help when in need

Really in a bind and need the bank's assistance, but when the IT system says no, it is NO. Regardless of history or circumstances. And nobody else to talk to or escalate. I was over my limit and made an arrangement with the bank as I expect funds to be paid into my account. An R 25 000 bonus that I have a letter for. My car broke down on the w/end and I had to take it in for repair. I have to pay before I can get it, and to do so I took out a small loan from a different company. That was deposited into my account yesterday, but because I was over my limit with more or less the same amount, it was swallowed up and not accessible to me. I cannot take kids to school or get to work. Asked for an increase in OD for a few days, but was told no! I do not have revolving credit available because of a mistake the bank made a few years ago but I still get punished for it. They lost my paperwork and then omitted some when asking me to re-sign. In the next few working days, my salary of more than 50 000 and a 25 000 bonus will go into my account. I have a need Today though and the bank just refuse to help. It is exams and the kids are at home. Bad things happen to people!!!