BAD SERVICE

So I held for 20minutes before I could get through to an operator only to be assisted by a ***** (Clarance mashala) yeerrrr how could a company grow with such *********** people? I want to reduce my month installment and take up to uncapped router for R890. 00 but because I was assisted by a ***** I could not get help. I then asked for his supervisor and he asked "for what"? Mind you he failed to even get me a settlement amount, he kept saying he is going to calculate but never actually did it because he doesn't know what he is doing he kept saying that even if I cancel the contract I will still need to pay for the whole contract duration which makes 0 sense to me because why am I paying a cancelation fee and then getting charged as if I still have the contract???? This is annoying and frustrating