Tricare review: Refusal to pay my bills till I argue and even after given an authorization number

I have breast cancer HER 2 positive, every treatment done by doctors I have to argue with tricare for them to pay my bills even I have authorization number given by them, iam stress out every time the bill comes and the doctors tell me to that tricare refuse to pay them, because of this I forced myself to be where military hospitals are accessible just to avoid argue ing and being stressout by them, Example scenario, I had my mastectomy done, tricare refuse to pay my anesthesiologist, who anaestheties me during my surgery, every treatment done I have to argue with tricare, because of their refusal to pay my doctors, so after arguments and lengthy dicussion they again try to accept the bill, for resubmition, i just want to avoid stressful encounters with tricare, because they are worsening my condition instead of helping me.