Never gets back to clients

I have been on hold and trying to get hold of a person in the deceased Estate dep Name R Bezuidenhout to sort out the outstanding amount of my Late fathers account but for the life of me theres never a line available and always on voicemail saying they will get back to me . All I want to do is negotiate an amount and pay the outstanding but this is so frustrating that I cannot get hold of anyone . Numerous emails have also been sent and its 3 months already with no response . I need to speak to someone urgently