Consultants apparently talking to a colleague but me

Today like many Vodacom subscribers, i called vodacom customer care solely because their billing is flawed and i needed clarity and understanding. I spoke to a lady who introduced herself as Itu and she later tells me she is Itumeleng( with an attitude). Firstly if you want to be called by Itumeleng, introduce yourself as Itumeleng. My issue though is, she really didnt hear what she was saying to me and never really answered my question. while on the call she says " wena ungijwayela kabi". When i tell her that i can hear that she said she is speaking to her colleague and not me, while i was still talking to her. She further told me there are other people in the call centre therefore i will here voices. But it was her talking. I am left disappointed with the level of disrespect we get from this consultant and also getting billed in a way that nobody can explain.