Discovery Medical health is a ****!!!!!!!!!!!

So Discovery Health Medical scheme decided to withdraw my medical aid so they don’t have to approve me seeing a specialist. They reason being that I didn’t disclose a medical issue( pre existing condition) something I had 11 years ago and was taken care off and they want to use that against me. All because I went to the doctor and I wasn’t feeling well and doctor decided to refer me and ask medical history, so they took my history of 11 years back and used it against me to withdraw my cover and decline me seeing a specialist.