Appalling Customer Service re RCP closure

Appalling customer service! I live in the UK now and have settled my RCP. I have made numerous costly international phone calls and has sent numerous emails (email adresses provided by call centre staff) to get the account closed, but have received NO response from SBSA. My RCP account is still not closed. Call centre staff is also not properly trained as they did not know what to do and kept transferring be back and forth between departments insisting that I go to a branch to close the account. I need the RCP closed urgently and I do not have the option to go to a branch as I no longer resides in SA.