Pep cell Alexandra(no refund for a freezing cell phone)

I bought a phone at pep cell Alexandra Joburg .Samsung A04 it was R2300.the phone starterd freezing the screen.i went to the store to get a refund mind u it's only been 16 days when I first went to the store I stood there for hours n no one was willing to give me my money back .I'm 7 months pregnant with complications n I stay alone, what if something happens n there's no need around n the phone freeze when I want to use it .the cashier Thulisile said I must cal the customer care line coz she need authorization code to refund me. I did,but customer care line said it's the Area Manager who have Authorization code n can help me .he/she was unreachable that day n have to come back yesterday, yesterday again no one wants to help me even the Manager n they call the Area manager, she refuse to refund me .I don't have other phone to use for emergency when I give this one away to checked .I just want my money back .phone have no physical damage whatsoever I just want my money back but they all done want to help me .it's not fair it's not even 17 days I have this phone. The customer service there it's terrible very terrible .I even cried to the manager he didn't care let alone the Area manager. My bp went high I'll never forget this .I just want my money back .it's so stressful to have a phone like this while I know my situation .