Please stop activity on my cheque account.

I went to the Boulders branch to ask for assistance on stopping activity or closing my cheque account and was told that it was not possible as I am in arrears in that account. I explained that I have tried blocking all my debit orders as I was no longer able to afford maintaining the account and it would be best if all activity ceased on that account until I was able to pay whatever amount I'm owing and was told by the consultant at the branch to call the ***** line and report unauthorised activity on my account. I did just so however ***** referred me to general inquiries and general inquiries referred me back to ***** as they were unable to help. On 20 March the last person I spoke to told me that a hold had already been put on my account but to my surprise on March 21 I received an sms that a transaction took place on my account and since it was a failed debit order it furtherincreased my arrears with the bank by another R138. I have already communicated to the bank that I am unable to afford the R1104 which I already am owing to them and it seems they are not willing to do anything to help stop this amount from growing each day and further sinking me into debt.