Can't you even close a cheque account without hassles?

Yesterday, the 02/11/2018, I requested a consultant at your Mall of The South branch to CLOSE my cheque account. After I had signed all the necessary documentation, she (the consultant) ensured me that the account would be closed the following day. Well, IT'S NOT CLOSED and I will NOT be paying one more cent in bank charges because your consultant could not complete a simple task like closing a cheque account. I want this account CLOSED. Please do NOT expect me to pay further bank charges or service charges or maintenance fees or whatever it is you like to call them.