PLEASE CLOSE MY ACCOUNT !!!!!!

I visited the branch at Mall of Africa to close my account due to poor service. The consultant was unsure of the steps to close the account and called another consultant. She requested that I pay in R10 to cover the cost of an SMS that will be sent upon closure of the account. After paying in the R10 she failed to close my account saying that there is another R10 that is to be paid in. I refused. Now I continue getting an SMS to say that my account is overdrawn. I Need the account closed but the staff are uncertain as to how their system works. PLEASE HELP ME CLOSE THE ACCOUNT IMMEDIATELY !!!!!!!