Bad Treatment

I’m writing this regarding the experience I have had from Paul French Cafe V&A Waterfront. I was an employee there working as a waitress. The manager by the name Melinda was so ******s towards me and she was making me work like a slave. I have then decided to resign and then she agreed on giving me a reference . I have been struggling to get a job until now only to realize that she was bad mouthing me to every employer calling for my reference and lying about me. They overworking people with too many shifts and work 12 hours everyday for the whole week no pay. She told me that I’m poor and there is nothing I can do to her because I don’t have the power I’m just a black uselessness waitress