Twice surgery and I dont remember going under

I wish my experience was that pleasant. I had reconstructive surgery and the last thing I remember is the anaethitist putting the cannula in and asking him not to give me anything until I had seen the surgeon as I wanted to confirm how the surgery would be done (since another surgeon had told me earlier that he didn't think I should be doing the surgery as I wanted and as had been agreed at the appointments with my surgeon). The anaethitist just said not to worry it would just relax me and injected it anyway. Next thing I remember is waking up in intensive care and realising that it hadn't been done as I wanted. Since then the doctors have been very dismissive when I've asked them what happened with the only response been that it wasn't done as was agreed because the surgeon assisting wasn't comfortable doing it that way. What should have been one surgery is now going to be three. When I then asked for a response in writing both the anaethitist and surgeons fabricated conversations that never happened and said I gave verbal approval just before surgery, knowing that the drug they used causes amnesia and I couldn't dispute this.