Terrible service

I went for a surgery at the end of last year. It was an urgent abscess removal. The anesthetist changed normal emergency rates but discovery will only pay half. The anesthetist has multiple time contacted discovery to rectify this as it is normal practice and she has had exactly the same claim paid out from discovery before. We have sent multiple correspondence to discovery and received no formal correspondence we. have been going up with this matter for almost 3 months. I have been a classic comprehensive discovery member for 30 years contributed millions of rands and had very few claims and get dismal level of service.