OptumRx PA denial after 15 yrs

How can optum RX deny a PA for a pain medication I've been on for over 15 years?? I tried to explain to many people at the PA phone line, without this medication, I'd be in the hospital until they do. Well, that's exactly what happened. My medication ran out on Wednesday, and I was admitted on Friday. They are paying more for a hospital bill than they ever would if they just covered the medication. Because this medication would be over $2000 out of pocket, I would never be able to afford it without approval. I have been trying to get them to approve this medication since 1/11 so I wouldn't run out. They can clearly see they've covered it for many years, but they didn't care. In fact, my last refill was 12/22/23. The medicine is a Tier 3 and the issue lies with the quantity limit. I take a dosage that is twice what the formulary allows for a 30 day supply. I believe the majority of the blaim comes down to my recent doctor change. I have always seen a pain specialist for this medicine, but he is over 2 hours away. So, in November, my primary care doctor said he would prescribe my medication as long as I continued to see the pain specialist once a year. I guarantee they didn't bother to put any of this on my PA paperwork. I know most people may not see pain medications as life threatening without them. But for me, it is a special situation. I have a condition called Addison’s. Without certain medications to control it, I can and have went into a coma and nearly died. So, anytime I am without pain medications, my body withdrawls and puts me instantly into a life threatening Addison’s Crisis. Regardless, I don't understand how a company can endanger the life of someone over paperwork for a drug that had always been covered in the past 15 years. If anyone has had issues getting their pain medications covered thru OptumRx, I'd love to hear your stories. advice or suggestions on what to do at this point, it would be greatly appreciated.