Unpaid claim

My mother had two policies with them and she passed on 2021. When we went to claim they wanted documents which we provided them with,however, when they were suppose they gave us runaround that they told us that they deposited the money in my late mom's account. But when we went to the bank they checked and they found that the money was sent but it bounced back to them as the account was closed. So when we took called and asked them they kept on insisting that they send the money but when we asked for proof of payment they no longer responded and till this day we haven't received any money.