Unfair cancellation of medical aid and unauthorized debit oders

On the 2nd of may i was admitted through the ER with severe abdominal pain. After tests they saw i had a highly infected gall bladder with numerous gall stones. The doctor told me he had to remove my gall bladder via laparoscopic cholecystectomy as it is life threating. A week after my surgery discovery kicked me off my medical aid and said i did not disclose a stomach ulcer. Now the problem is i dont have a stomach ulcer. No test were done nod cronic medication NOTHING. Just pure speculation! I then appealed the case and until this far they avoid me! No one can give me an answer as to whats going on! Over 2 months BEFORE my surgery they have deducted R7000 more than they should have. Still no refund still no feedback. Kicked me of my medical aid for unfair reason! And according to medi clinic they do not do surgery if it is not pre approved. So why pre approve if you are going to kick me of my medical aid?? Why can no one come in contact with us as to where i stand with my appeal? This is outrageous and im not going to let this go. I have 4 children with a income so little that i can barely afford my medical aid. But i still paid! Now im left with R60000 of medical bills that i cant pay! Why do i even have a medical aid? I hate discovery and will post this evey month on every social platform for the hell they have caused me