I suggest you write down all the info you have in a short, concise format so you can present your facts when you do reach their offices by phone or letter. Many of these places don't have appointments open for many months, and since everyone calling them is probably also really sick, you have to make a good case when you speak to them. It has been a very frustrating experience, so don't give up if you get the door slammed in your face a few times as I did.
Lord, bring Your strength and healing hand down to Mjaye. Heal the sickness that resides in his body. Fill Mjaye with your love and faith in You and remove the anxiety. Heal Mjaye's kidneys and ease his family's worries. Lead him to doctors to whom You have granted wisdom so that they might find the cause of this disease. Let Mjaye to those doctors through whom You work. Thank You for hearing my prayer Lord! In Christ's name I pray. Amen.