Overcharging customers on their store cards!!!

I paid my Woolworths store care three times in November. When I got my statement they charged me a late fee charge also three times. R25,04 three times!!!. When I phoned the customer care line Akhil advised me that it is not a mistake. After I advised Akhil it does not make sense. If you want to charge me a late fee charge for a month, it can only be done once. I can make as many payments on my account as I want. This is completely unacceptable. I want a new statement before the end of this week reflecting the late charges credited back to my account. I know all the companies went through a difficult time , but to try and make it up like this. No Woolworths!!!