Rude manager and staff

I went to a PEP store name (PEP 0989) Lebowakgomo. To return baby shoes n refund a laybye. When I got to the store I approached the security and explained that I had an item I wanted to return she said I must leave it at the tills. I went straight to the tills. I found a cashier there and told her I'm returning shoes as I wanted to do more shopping. She gave me an unfriendly look when I presented the goods and my laybye receipt. She questioned me with an attitude why was I returning goods. I couldn't tolerate her tone I defended myself. She called her manager . who also had an attitude. So I couldn't bare with two ladies and gave them my piece of mind. I work with customers also and I'd have never behaved as they did. It became a tell all and some other staff members joined the bickering. Like seriously i have never received such horrible service at other retail stores like Ackerman's.its total nonsense. Pep needs to discipline their employees from management level. U can't be bul**** by a cashier n have the manager not calm the situation n join the argument.if its not long queues n one/two cashiers its rude staff. What happened to customer service?