Can anyone explain this please??

I went to a podiatrist last summer as I have a sero negative rheumatoid arthritis - ankylosing spondylitis- it attacks the spine-SI joint-hips knees -shoulders-feet- any or all!! He recommended orthodics as I had plantar fashitis which is part of my systemic arthritis. I agreed to try them as they are terribly expensive. He informed me that insurance would not pay and I also was informed at the desk that insurance would not pay!! Well I get back my EOB and they were going to pay a good portion of the orthodics but because I had not gotten a pre authorization?????? they would not pay!!! I wrote an appeal and today I hears from them that they are not going to pay!! Isn't that a crock of !!!&&&***????? so because I was misguided by the podiatrist and staff, and did not get a pre authorization I am being penalized. I know better and am usually up on things but this disease just takes it out of you!!! I used my feet for patient care for 40 years. I will be 60 in October and am on long term disability through my hospital. I am just sick about this. do you think I will get anywhere calling the office manager??? I am going to write to the doc. He was so good. But doubt I will go back over this mess!! If you have any ideas I thank you in advance!!! It is no fun being on the receiving end of health care today!!!! Please appreciate your
health because nursing will rob you of it eventually!!