MOO attempted to strong arms me with collection tactics. Now, they're stalling

I was disabled in 2009 with a multitude of medical problems. I started a process with Mutual Of Omaha Disability. After months of jumping through hoops they finally decided to pay the claim. Shortly after I was awarded SSD. When that happended Mutual Of Omaha decided I need to repay their monies payed out on my claim to me. That money went to back bills accrued while waiting for the original disability claim to be payed. They attempted to strong arm with collection tactics but failed. They have kept my monthly payments to recover that money they felt was owed to them. They were calling it income supplement replacement and not disability. Well time passed and that account has been satisfied even by Mutual Of Omaha. Well they sent thier in-house collection agency to collect a month’s total payment that was missed at some undisclosed time and they were keeping the money. That was resolved and now they wrote directly to my physician and requested they fill out and return a form for my disability with diversionary statement that signed you agree with their created opionion of my condition whch would put me back to light duty work that does not exist. My doctor did a total reexamination, sent their appeal forms with her finding that I am not better and my disability is accurate and final. I won’t get better. They have called back after a week to let me know they recieved the appreal and it will be two weeks for their medical review staff to reach a conclusion. What’s next is anyone’s guess as they will line up the hoops I will have to jump through.