Extremely poor customer service with Nedbank

Hi. In March 2020 my uncle passed away with covid and I am his executor. I have the letter of authority from the Master of the court and all the necessary paperwork and death certificate. I have dealt with Capitic bank and closing his account was done without effort. I then contacted Nedbank Deceased account department and send them all the paperwork. It's now almost 2 years and I am still battling to get his accounts closed and the money paid into his late estate account. This in turn is holding up the whole process with the Master of the court. I was originally dealing with a lady by the name if Monique and although she was very helpful she just saying that I need to include Nedbank in the letter of authority. I have since finally managed to contact ghe Master of the court and since my uncle has a will and Nedbank is in his will the change is not necessary. In the mean time Nedbank has been overwhelmed by the covid deaths and everything must go through one generic email and no phone calls can be made to the dept. This is ridiculous. We need the accounts closed. Someone in authority in the Estates dept needs to cont me and resolve this issue. I am very upset and disappointed