Treated harshly by a Beauty Salon Owner that doesn't wanna pay me

I app**** for a hair & lash position at the Touch of Paris Beauty Studio and was called for an interview trial to showcase my work , I went & did that . I passed and Palesa the owner told me I'm good , I can start working , she then gave me a uniform and told to come work as there's an opening for new branch in Randburg , Kya Sands which is at CoSpace Entrepreneur village. I worked , knocked off very late after 10pm with the other ladies . Days went by , still working perfectly. The lady started treating us bad calling us trashy names , we kept quiet and carried on working . Come pay day , she's been doing run arounds , she ended up again calling me names on our WhatsApp chats such as "I'm a donkey , I'm useless , I'm 30 & struggling, she's not gonna pay me , I worked for free , i'll never mount up to anything in life" etc .... Then she goes again to threaten me and tell me she's gonna open a case for harassment. I'm so hurt. This girl is sooooo rude , she doesn't people generally. Please help , I just need my payment.