Surprised with Surprise’s shocking Customer Service

I bought a two pairs of Trustees for my sons on Monday Afternoon (30.09.2019). To my dismay, I took a size too big, I asked him to put on three pairs of socks and test it in the house. I went back to Ackermans this afternoon 02.10.2019. What shocking service I received from your Stand in Manager “Surprise”. Firstly she told me, because he had the shoes on, she doubts that Ackermans can exchange the shoes, it had a bit of dirt at the bottom. I asked for the Manager- told me the Manager is not available, I will have to wait until tomorrow. I then requested that she call her Head Office, my son needs shoes urgently. Called the Head office – they asked for a pic and approved the exchange. Even after the approval, she asked me, “how must Ackermans sell these shoes after my son walked in them?” I said nowhere does it state that shoes cannot be fit on , even referred to the back on our slip – States return within 30 days – she started studying the back of the slip, with no valid reasons. I told her that that I don’t appreciate her attitude and her argument . I went to look for size four, didn’t find it. I waited for her while she was in the Staff room, when she came out, she walked passed me even though I called to out to her. Ignored me and went to another customer, we waited. When she was done, she decided to process a refund. What upset me was her attitude towards me. Even spoke about me to another cashier, thinking that I don’t understand what she is saying, while there was another customer standing in front of the other cashier. I have been shopping with Ackermans ****arney for the past 8 years. I have never experienced such humiliation and embarrassment at this Store nogal for a R109.00 ?