Negative balance

I noticed i had a minus on my account and its wasnt adding up i calll the call centre and the agent confirmed on a recorded line that it does add up they will call me the following day at 10am waiting for the system to update and no called. Then in the 20th of june i receive a message saying its resolved but still when i check my balance i still hv a negative balance in my account ... fnb robbing people everyday because they think we wont check ... im getting paid on Tuesday this means i pay for something thats not mine if that happens im closing my account