Worst estate managers

This is now my second complaint against Standard Bank estate managers. My father passed away last year September. His estate was handed to a person in November. Around February this person left and was handed to a new person. Now we found out that its going to be handed over to another person. Three persons!seriously what is going on. We cannot do anything. I will never recommend Standard bank estate managers. Almost 10 months with no letter of executorship. Bank account still open. Why?