Undertrained/ rude staff impact consumer pockets

Disgruntle by service, misleading and pathetic, I was advised to cancel my contract on the 28/8/15 , i called 084173 no answer , music kept playing, i then called cell C .CC , I was assured that that the systems were low. I then called back when Anele took 10 minutes persuading me to upgrade i responded i want to cancel the contract. he told me that i would have to pay an extra month premium because of the date i called , I mean i called a day late because the systems was low. he reciprocated by claiming that Cell C never ever has low system ( making it seem as if i was a ****) i was furious. I asked to speak to a superior , Anele brushed me off by saying that the superior is busy and he will speak to me whenever he is free which is highly unlikely to be soon. when i requested his name he just said Anele and put phone down. How ****** rude? I have aright to clarity and in this case it was being violated im here angry because it's not my fault , i called on the specified date to cancel the systems had issues not me but i have to pay and extra month premium. Then the consultant has an attitude , slammed the phone, other consultant mislead me saying low systems. why should I pay ??