I am so sorry you are going through all this drama. Insurance companies amaze me. This surgery will cost them less over the years by eliminating all the issues from obesity. You would think they would push it through faster!
I went through some issues (not add bad as you) getting approved. First off, the coordinator was out few weeks from a surgery and nothing moved while she was gone. I wanted surgery this year because deductibles are paid already this year and also next year our's is going up alot! When final sent it was denied because of 6 month but I had been to my PCP before and they didn't count it. My coordinator re submitted exact same paperwork and was approved! Ugh.
Good luck and hold you get the golden ticket!