ABSA Stock Brokers

Last two days I am unable to access the web trading platform. I can not reach the help desk by phone. Only have to listen to "We are experiencing high call volumes at the moment". I urgently need to trade as money is needed for other transactions I have committed to. My request for help by email has also gone unanswered. How can you do business with such an institution. At present I am planning to change my Broker for share trading as no help is forthcoming from ABSA Stockbrokers. Not even a general message on their web page to explain that they have problems.