Deceased estate department not releasing my late father’s funds

It has been a year and I still cannot access my late fathers account, J am the executor with all the right documentation. Standard bank has been giving me the run around FOR A YEAR!! I have spoken to 4 of their employees, and I’m still being given the run around. Going to the branches is hopeless because you will be in a queue for hours only for them to tell you to call the deceased department on the phone. Then the deceased department will tell you to go to the branch to certify documents. I would not recommend anyone with children to use standard bank.