Standard Bank... more Sub-Standard Bank

I have been trying to close my account for the last three months with Standard Bank. The account is not used and I am not in South Africa currently. The requirement was to visit my branch to close the account (which I cannot do) or send a letter of cancellation to the branch, including my cut up bank card. This has all been done. The account is still open, I am not getting any response from any of my queries on the status of the process and I am still being charged monthly account fees (now a negative balance) on the account despite following all steps in their process. It seems like Standard Bank simply wants to milk a few month months of fees out of someone when they decide to leave.