Sanlam will not pay my refund death claim

I have been calling Sanlam about my refund claim they suppose to have sent to my new account number and it's been months now I still have not received it...I was told that from my father's death claim that was a refund amount owned to me I have called them 5 times already with my updated info I still have no response evertime a different people who answer and restart the process I would like to just my refund I'm not happy and it's shady