Shocking Service!!

We were advised that the Nedbank Deceased Estate accounts to be closed with regards to the Estate Late of my sister's late husband, whose accounts were with Nedbank, but as to date, the only response we get is that the accounts have been closed but the monies have not been transferred and on the Nedbank platform when I ask for an update, all I get is that the case has been escalated!! To date nobody has responded in order to get these monies transferred, this estate has been going on for almost three and a half years!! Can we please get some closure so my elderly sister, who is now almost 80 can enjoy the last years of her life!!!! I am acting on her behalf. Numerous emails have been sent by Standard Bank to Nedbank, but still no response. The people who were copied in have also not responded, and they are Sader, R. (Raeesah) ; Govender, M. (Mogie); Gopolang>; Pillay, J. (Jamie) ; Lawrence, S. (Shantelle). I am begging you please to respond and get these monies transferred in order to finalise this estate!