ABSA Santyger - zero client service

I have never experienced such a total lack of service. It is the 3rd week of trying to get a balance for our Home Owner's Association's fixed term investment. I have lost count of the number of emails, calls, voicemails, and messages I have left for the banker and secretary assigned to our account. There has been zero response from ABSA. Our investment's fixed term is coming to an end in a few months, but not even the danger of not reinvesting with ABSA seems to be a factor. I am at my wit's end. What must one do to get service???