Lack of service and feedback

I have been with Discovery for more than 10 years in the past with ZERO CLAIMS besides the Savings portion. Never needed an operation or anything. I cancelled my membership for about a year because i wanted to pay off my car faster. During that year i was on medical insurance. Also with no claims. When my car was paid off i immediately joined Discovery again. There was no waiting periods. Went for a checkup after 2 months. Had to go for tests and it was found i have gallstones and porcelain gallbladder and needed my gallbladder removed. I contacted Discovery beforehand to find out if i was covered. They confirmed. I booked operation for 24 June. But when i phoned again for pre authorisation they were full of stories! I phoned on 19 June for pre authorisation. It is now 24 June and i have STILL NOT received any feedback!!!!! My Doctor had to fill in form which they already sent on 21st.Had to cancel my operation due to Discovery incompetence. I phoned SEVERAL TIMES to escalate as i needed authorisation vefore 24 June. Discovery is an absolute disgrace! Special care was not even taken to get my authorisation before the opp! But they are VERY FAST in taking peoples monthly payments! Still not so much as an sms to let me know. Utterly apaling. Join another medical aid