Absa Estate late Department - Worst servic ever

I have been trying to get assistance with regard to the reopening of my mother estate late account and I am not getting any help. I have made calls, sent emails and I even had an incident where the consultant hung up on me. I have been communing with the lady that has been working with the previously opened eastate late account but she is currently not responding to any of my emails, got hold of her over the phone after a million attempts and to my surprise after introducing myself she hung up on me. I would like to know what does one do in such an unfortunate situation?