Worst customer service ever

I am extremely disappointed with service I received from Sonique Constable, its the most unprofessional service I have ever received. She was more interested in correcting me over the phone than listening to anything I had to say. I asked for a manager and was told not available, then suddenly he was and then again not. I was told he would phone me back, then when I asked for his name I was told I am not allowed to know his name? so I am not allowed to know who is going to phone me? In addition, upon my call landing with your agent, I could here her shouting 'I am ready' and what not to someone else. Seriously, she did not even know the call landed until I said very loudly 'hello'. Throughout the entire call I could hear other agents laughing and chatting in the background, now I know why we hold for 25 minutes in a queue. I refused to put down and insisted on a manager, she eventually hung up the phone after placing me on hold for a while. Sies Vodacom, is this how you treat your customers? I would like to cancel with immediate effect. Thanks