Terrible service. Pep Home Mall of Africa

On Friday the 3rd of November I went to pep home mall of Africa,the service I received there was so hideous. After making a purchase I wanted to return one of the items that I bought because I realised that it was no what I thought it was. While I was still by the counter the cashier decided to call another customer, that was still in a queue, and said to me I must start queuing again. I refused and told her that I can not queue for the second time since I’m heavily pregnant. She then started to exchange ugly words with me and I told her that I will report her behaviour she rep**** by saying in her exact words “what will they do even if you report me and what will you gain on your side go report me they won’t do anything I don’t care” that’s what the cashier said to me. I then requested for a manager she then said a manager is not around. Assistant Manager then came and requested her to apologise she said she won’t apologise all this was happening in front of other customers, the was this other customer who even said that’s not how she should behave because he is also a business owner. Fast forward Assistant Manager then called a Manager to come the manager very same manager they said she was not at the store came from the back with a conclusion that I am the problem without hearing my side of the story. I decided to leave since she also had an attitude towards me. All I wanted was to return an item and receive good customer service but they failed to provide such. The manager needs training she doesn’t have managerial skills.