Bad service and cant resolve queries

I am really frustrated and unhappy with mtn service and how they handle queries, i had a payment due the 4th dec for the wifi however it declined, i made the payment on the 14th dec when i had money and until today i dont have any internet connection, they reconnected it on the 30th and the 31st dec and it was buffering all day there after it said no internet connection. i have been calling since the week if the 14th regarding reconnection and the keep telling me they can locate the payment on the system i need to send an email with my proof of payment to the BOSS AND *** and they escalating it for me but they just not receiving my email i have been calling mtn all they do is transfer you from one person to another just for them to disconnect the call or pretend that there is no one on the line, i have send a complaint to this email of backoffice and no response at all, i am really unhappy disappointed with mtn as now i still dont have internet connection and they telling me the payment they took now in jan will be for feb what nonsense is this because they confirmed the account number i used was correct ! i dont wish to continue my service with them !