Bad pathetic service

Absa is the most *********** bank I've ever had to deal with, my dad had an account with them for years and as an account holder there's R15000 benefit which he qualified for automatically but now my dad passed away on the 29th of December 2020 and my mom told us about the benefit because she's the one who was supposed to have claimed for my late dad but unfortunately she also passed away on the 4th of February 2021 so as their daughter I tried doing a follow up with Absa but I'm not getting any response. I've contacted customer service and was referred to Deceased department and still I was transfered to their Life department and still did not get a response regarding my dad's money but no one can advise accordingly. I had lodged a complaint in this very platform and was told to go to the branch with the letter of authority to claim, I was told the matter would be referred to the Life department but now I'm expecting the letter of authority any day however I'm worried as to what's gonna happen when 3absa department cannot see the money that's due to my dad after his passing. Is there a bank that cannot see persons benefit on their system. I'm very angry worse after seeing people complaining of the very same thing on face book about Absa. Absa is the worst bank, Absa I want my dad's money because I covered the costs of his funeral, I want answers