Negligence towards the customers

Hi good day, I have bad experience with dstv, communication with them is bad, they don't know how tell the customers the amount they must pay to their account. On the 1st of September I called specifically to ask how much do I owe to pay my account so it can be re connection, I was told I must pay 550 and that amount will be until 25th of September, today my dstv is been disconnected bcos they say the is amount that is due, which all this days they didn't know that the was amount due, because when I try to clear an error using self service, showed me that my account is paid up, up until later the told me for them to reconnect my dstv I must pay, why today when they could have seen that on the 1st,i want dstv to be reconnected, because it's their negligence