Most pathetic medical aid in SA!

I have been member of the most pathetic medical aid in SA since 2014!! The same procedure have been done on my wife twice by the same hospital and same doctors in the last 4 months. My wife is expecting and is a high risk patient, because of that she have a few doctors working on her and cant afford to move doctors or hospitals. All of a sudden the hospital and doctors we have been using are now Non Designated by this medical aid!! She have to undergo the same procedure as in January and March this year again next week and the procedure wont be authorized by Discovery as the hospital and doctors are suddenly non designated??????? By April this year I started to get worried as our baby will be arriving soon and we might need some medical assistance. I contacted Discovery and loaded a GAP cover with them starting 01 April 2018. I was assisted over the phone by the agent Kevin and was told all is in order and my GAP cover is sorted. Today I was told its not activated and need to sign some documents. I have asked Kevin twice in April if all is sorted and if I need to do anything else, I was assured all is done and sorted. After 3 phone calls again today, each up to 30 minutes nothing is still done!! I chose this medical aid so that I will not have any problems. I pay them a lot of money for the benefits and thought that we will be fine and can be assured. Each and every claim has a different story and I struggle every time I have to do something in connection with Discovery. Claims are paid out from wrong accounts and the amounts always have a very long explanation. As long as they pay you out a quarter of your claim you should be happy! Please advise me where to go and what to do as my child is borne in a month and this medical aid cant be trusted with life and death of my family!!!!!