Horrible service from Cebisile Zulu horrible

Vodacom is the worst i cancelled my contracts early this year and I’ve been querying this and ended up paying R1250 after they referred my contract that I cancelled. Just when I thought I’m done I keep getting statements that I’m owing. I call today I spoke to a lady that is telling me that I took a deal of iPhone 12&13 which I don’t know about. She then transferred me to Cebisile Zulu Horrible human being horrible service!! She didn’t want to transfer me to a manager and told me to stop shouting she advised she can’t assist me as she’s working from home. I’m extremely angry and I’m tired and this point I don’t know what on earth I must do anymore. I work in a call centre that is not how you speak to customers she Rude and can’t do her job