Discovery Refuse to give pre-authorisation

Discovery refuse to give pre-authorisation to my brother in law who has been with them for 21 years. He got sick over the weekend saw his doctor on Monday did some test and his doctor referred him to a specialist at Rose Acres Clinic. Paul is currently in Rose Acres as his work got involved - he has been admitted but is waiting for his specialist to complete a PMA form. My concern is he is in so much pain no test can be done until they receive the pre-authorisation number. Why should Discovery question a customer of 21 years - why should his specialist now complete a form to proof to Discovery that he did not abuse his liver. Paul doesn't drink nor does he smoke. Even if he has abused his liver - who is Discovery to question this he rightfully pays his medical aid every month. He was admitted into a general ward yesterday and was rushed to ICU last night as they gave him to much pain medication through a drip. They had to resuscitate him. I contacted Discovery this morning to see if I can get somebody to help, I was informed by Larissa Allen that she cannot do anything until the doctor completes the PMA form. In the meantime Paul is vomiting and struggling in ICU.