Negligence from Standard Bank costing clients thousands of rands

I went to buy supplies for my business and my business card was declined. Upon investigation I discovered Standard Bank had deducted about R5000 in bank fees overnight. I went into my branch (where there was a line of clients with the same problem) and they explained that Standard Bank had increased their BizLaunch fees from January 2018, but basically forgot to apply the new fees from January. So, they now deduct all the fees at once!!! I am now responsible for paying a huge fee due to Standard Bank's negligence. It is like going to Pick and Pay, paying for you r groceries only to be called back into the store by the manager to demand you pay for an increase in products they forgot to add to the price. Does that sound absurd?? Well, it's exactly what you are doing Standard Bank. You have lost many clients over this, I will be looking at moving my accounts too and my fiance has already started contacting other banks to move our home loan.