Abysmal Service and Inaction by Standard Trust (part of Standard Bank)

I've been waiting for 3 years for Standard Trust to finalise the Estate of my deceased mother. This is "delivering to clients" ? I've raised this issue with Standard Bank Group, with Standard Bank South Africa, and with Standard Trust, many times. I have pages and pages of emails with the staff at Standard Trust. I get promises but, in the end, no action. Part of the problem seems to be that Standard Trust has a high staff-turnover, and management of the operation is completely disinterested.