Discovery Health Termination due Death

My younger brother passed on 22nd Jan. The following I contacted Discovery to make arrangements to his kids to alternative medical aid. Until today I am still battling to get a termination letter to enable moving kids to alternative medical aid schemes. Kids are not medically covered with one of them at boarding school in the.mist of covid. Legally vs morality is painful. Can someone assist to enable me to get my Kate brothers kids to another medical aid, by getting discovery to assist with a termination of benefits as they already terminate the benefits