Funds not being released for my late sister

Goodday, my late sister passed away in September 2023 where we submitted her information with all the required documents for her grandchildren to get the money she was putting away on the 32 days account with ABSA. Ever since her passing we have been running up and down at the Florida branch, Roodepoort and have not been helped. We have been running from pillar to post - can anyone help us with getting the funds soonest because when we call there is no answer or direct feedback with regards to the funds. This is absolutely frustrating and brings us on peace. Please help us asap