Poor customer service

My mother passed on the 18th of December 2021, she had a bank account with TymeBank. On the 21th of march 2022, I emailed TymeBank the letter of authority from the masters office, my mom’s certified death certificate, her certified ID and my certified ID. Requesting them to close my late mom’s account and payout her balance money from her account. I have been sent from pillar to post ever since the 21st of march 2022. TymeBank has poor customer service, I have emailed several emails to get assistance, but nil effective assistance.