Drs are ******** us

I'm so frustrated, I went to the dentist in June for a filling and when I got there she worked on my root canal without even without discussing with je then gave me a temporary filling, they claimed from my medical aid and I was told everything is settled, she kept on scheduling appointments but not for my filling but other things and everytime I left the practice i was told everything has been paid ,eventually I was then provided with the service that I initially wanted which was the filling... after 3 months they told me the medical aid is not paying and they are taking me to the lawyers, drs are Mafia's the minute they see you have medical aid with comprehensive cover they just want to milk it ,now im taken to the attorneys and my bill is -+ 3000 that idiot not plan for . I'm so annoyed by this whole situation