Unfair Honor Fee

Good day,<br> <br> Due to a debit order that was incorrectly made on my cheque account, my account was left in a minus of R1.22. As of the 1 October 2015, a further debit was made by FNB in which I was charged R100.00 in response to this negative balance. I contacted the call centre on the 5 October 2015, the agent that I spoke to advised that this is a standard fee that FNB charges nondiscriminatory regardless of the amount to which the account becomes overdrawn by. <br> <br> I fail to understand the logic regarding this in comparison to the amount that my account was overdrawn by nor the customer service attitude to which this matter was handled.<br> <br> Can someone please investigate this situation as this is grossly unfair onto the customer?