Declining give pre authorization

Membership No ********** 9031. My son did an operation without a pre authorization on the 23 /01/2018. My son got a missing tooth in a top front teeth. The tooth never grows again after the milk tooth fell. He has a tooth missing gap. We went to the dentist for a cleaning and checking. The doctor saw this and she asked me why there is a gap. He was around seven or eight that time. I told her the tooth never grows back. She gave me a letter to go for x rays. I happened that there was also another tooth that block that one to come back. I went to her with the x rays. she refer my to an anthodontics she couldn't be able to extract the tooth herself. But I received a call from the receiptionist of the anthodontics telling me that I must pay cash for the procedure because the medical aid is not going to pay. I had to cancelled the appointment because I didn't have cash. Sometime late my son was complaining about this . I went back to the dentist for consulting. She advice my to go to Mitchell's Plain Denstry Clinic it is where my son is getting treatment. Everything he did there so far had been pay by medical aid. But they also couldn't extract the tooth there. They made a booking in Tygerberg hospital it is when the did the operation. I went to Denis offices in Century City on Friday 19/01/2018 to get pre authorization. They said it is declined. I must try to get a motivation to the doctor to say why my son must do that procedure and I must send it to the scheme. I got a motivation from a doctor and I took in to medscheme in Cape Town office. Johanna email the doctors motivation to Denis no Monday 22/01/2018 it was a day before an operation. Johanna said a I must do follow up with Denis after three hours. I call Denis and they said to me, it still declines because it is going to be done at hospital ref no ********** . The dentist sent me to the Clinic in Mitchells Plain because she couldn't do it on her own. Even the Mitchells plain couldn't do it that is why they sent me to Tygerberg hospital. I even email Bonitas on Monday to query about this up until now no response from them. I attached everything to the email. My son did the procedure without an Pre Authorization. I never ever did any procedure before it me first time and then this. It is worse something for a child.