ABSA not responding to their emails

We have an ABSA bank account and we sent a message on MONDAY from overseas via email to please close our overdraft. It is now THURSDAY NIGHT and STILL Absa has not responded to us. We aren't able to phone them through their call centre from overseas as it costs too much. WHEN WILL ABSA BE ANSWERING THEIR EMAIL AND HELP US??????? PLEASE CAN WE DEAL WITH THIS VIA EMAIL AS WE ARE OVERSEAS AND THE TIME DIFFERENCE MAKES IT IMPOSSIBLE TO TALK ON THE PHONE. We are nine hours behind. Our number entered below starts with a +1