Discovery - NO FEEDBACK

Discovery, I am still waiting for you to provide me with feedback following my last complaint. Let me explain, I needed a surgeon for a procedure, where DR advised that I can not wait. I contacted my local hospital and was advised all the surgeons were on leave. I went to another one recommended by Discovery and when submitting all the paperwork, was advised I would need to Pay in a co-payment. I then asked Discovery to help me, as I had exhausted all avenues to find someone on their list. The manager took my case and said they will help. They referred me to another hospital and another surgeon. Knowing my financial situation, I asked if everything was in order and if the full cost would be covered. I was assured it would be by Discovery, now I have had to pay for a medical bill for the surgeon as you did not cover the full cost. I would like feedback on this, why was I not told there would be extra costs? How can you refer me to someone and then you charge me for additional costs? this does not make sense to me. I asked in December already for someone to investigate, to which i received no feedback. I submitted a HP report, where someone phoned me, and promised to phone me the next morning. I am still waiting that phone call almost 2 weeks later.

what more can I do to get someone to look into this and answer my reasonable questions?