Incorrect billing - *****ulent calculations

please note that i have not been assisted since you responded to my query above. I just received a call from the numbers ***. the gentleman who called me was very unprofessional, un-informed and kept on laughing in my ear when i was raising questions. He was not able to answer not even a single question that i asked but told me to go to a branch. how upsetting... he informed me that the so-called outstanding amount is a pro-rata calculation. my quetion to him was from which dates was the prorata calculated from and when was my account swtiched off. he told me that he does not have the system to check, then why did he call me? i requested that he put me through to someone who can check or who is able to assist me and he laughed and hung-up the phone in my ears. there is no way that i am paying that ridiculous amount, never. My account was switched off on the 28th of December and you want to tell me that from the 25 - 28 (3 days max) your prorata calculation is almost R200???? can someone who is willing to give me answers please call me but there is no way on earth that i am paying that amount. I would rather stay disconnected.