Disgusting service from a cashier that didn't even listen to supervisor

I went to exchange 2pairs of shoes and the 1 pair didn't have a code apparently. She assisted me, I signed and she left me standing there and went to her colleague and they were talking there for something that's not even work related, I asked another cashier what's happening cz the other lady just left without telling me what's going on and when she finally decided to come I asked her what am I still waiting for then she told me that she's waiting for someone to search for the bar code cz all those shoes don't have any so I asked her but you don't tell me anything and decided to go gossip with your friends while there's a long queue and I a customer am waiting here confused then she asked me if I expected here to just stand there at the till with me while she's waiting for that code, I told her that she can't go chat with her friends during working hours while we waiting without help she said I can't tell her what to do I cam go report her if I want to cz even the system is waiting for that code, she doesn't care what I feel. Her 2 supervisors came to ask what's going on and she kept talking back that I should go report she doesn't care even when they tried to apologize on her behalf she kept on being rude and harsh that she's not scared her name is Jeminah I should report that name. I had to leave the other pair there as I was getting late to go back to work and I wasn't being assisted accordingly.