African bank don't want to deposit my late moms investment and they do that with passion.

I am Betty. I have a serious problem with African Bank. They don't want to deposit my late mother's investment. I claimed last year December and I submitted all the required documents but still they fail me. It's now almost four months and I really need that money for a serious matter. Their poor service is costing my life I have a depression now and I'm still grieving. That's how customers should be treated ? I submitted all the needed documents from the masters court but still. I'm making unnecessary walk-ins to the masters and the bank I'm not assisted at all. Atleast if they can transfer me to their head office maybe they will assist. I am tired of the African bank deceased department they are not willing to assist me. All they do is to sent me unnecessary emails with no solutions. Bad service delivery rated 0. They dont care about me as their customer. Please assist me. I need assistance from anyone who can.