No assistance with cancelling Cheque Account

I've been a loyal ABSA client for over 20 years. Always was content with the service, however now that I have attempted to close this account I have not had an support or prompt response. I moved to Australia a while back but still had my account open, was being charged unnecessary high service charges. So I was in South Africa last week for a funeral, I tried to go into the Greenstone ABSA branch to cancel this account, but could not as I was told there was a transaction still pending, unfortunately I had to fly back on the Friday and send numerous emails requesting assistance to cancel this account online or via an email. I have received not one response. From being such a loyal customer I feel upset, would really appreciate some assistance before I get charged more unnecessary service charges.

Thank you