Poor Customer service

Angry customer!! I have been buying my little ones clothes from ackermans since 2013 and even when ackermans dissapointed with opening an account I still continued using laybe option to this day. Now just on Tuesday (15May18) I collected boots for for my lil one which I had laybyed and she wore them to creche yesterday(16May18). Upon from coming home I was told the teachers had been zipping the zipper all day cos it just didn't stay zipped.so ofcos I had to have my daughter put on the boots and walk, and the zipper unzip within 5min of even wearing them. I have no choice but to keep trying but still it goes down. Now since I have paid for the shoe and it looks like my child can't wear it I take the shoe back today after work, Sammy Marks square where old Jet Store was, I get to the door and explain to the security lady then a guy sends me to one named Oarabile or something in charge of kids department I explain my situation The guy tells me he can't exchange the shoe as he does not see any problem and that I should bring my child with so he can prove that its what is happening cos he can't see anything wrong.. he can't lose stoc****like what the hell!!? I paid full price for the damn shoe that my child wont be able to wear and he can tell me such bull****?i ask him if now since my child cant even wear the shoe what should i do, he says i should take an hour from work and bring the child so she can wear the boot for proof!! Like really is that how you treat your customers? I mean a clever person could easily let me write a report for his bosses then and let me exchange the shoe cos it might be fault from factory or whatever but for me to be treated with such disregard of I spent money and I need to have value for my money. Y'all will lose customers if ppl like that stay in your store. He is utterly rude and doesn't care about customers. I have spent money for a shoe that can't be worn and I am damn angry I will never buy anything from Ackermans and have good mind of even returning all the damn clothes I bought! !!!!!! These is what i have written in the Ackermans facebook page, and they just simply said they apologized and that i should inbox my details. I since have done that early this morning(18May18), and still waiting on them to make contact. i do not appreciate their attitude when coming to dealing with customers, we are also paying our hard earned money and they want to tell us about stock loss,that is not my problem that they choose bad suppliers and that should be taken with their supplier not customers that should pay for none value for money items.