Dissatisfied loyal customer

So conflicted with the hours displayed on the internet in that your Markhams Sandton store trades till 19h00 but the store decided otherwise. We got to the store 18h46 the doors were already closed and the lights slightly dimmed. I knocked for a while as there were staff members inside the store 2 ladies by the cash desk another one lounging on the sofa, one mopping and while others were standing around so disappointing. Seeing that I'm not backing down with the knocking the cashier called the lady who called herself (Lethabo) if that's even her name as she wasn't wearing a name tag which I find so unprofessional. She came to the door with an unpleasant attitude and said "What?" I quote "WHAT" to a paying customer. I explained to her that I needed some shoes and the time is 18h52 I still have enough time to shop and her(Lethabo) response was I have 7 minutes to do whatever I needed to do but 19h00 they leaving. I have never been belittled and bul**** like that in my entire existence by your staff member and as your loyal TFG account holder I will not tolerate such behavior if it means taking my money somewhere else I would gladly do so. I need answers and expect you as company to hold that (Lethabo) to account for the unpleasant incident and she needs an intense customer service training and manners. Highly disappointed