Reliance Standard continues to harrass me about denying my benefits, even though I'm clearly unable to return to work.

I’m a 62yr old who became disabled in 2012. I was given SSDI without any problem. I also receive money from Standard Reliance. However they request updates to verify if I’m still unable to work which my doctor has sent. They keep hedging around about terminating my benefits, saying it doesn’t look like I’m unable to work. But they say they will wait another month to see what happens with my next doctor visit and have insurance. Of course no big miracle change is going to occur and I’m left getting more and more stressed about possibly losing half of my income. So an unexpected change occurs I had acute pain for about 10 days. I wasn’t going to receive medicare in about 15 more days so I tried to hold out until then but I was unable to handle the pain and went to the ER. I was informed my gallbladder needed to be removed and that I also had congestive heart failure which was causing my shortness of breath. Bottom line I’m not ready to return to work. Should I asked for my records and let them know I plan to seek legal assistance if they terminate my disability. Any comments would be appreciated, thank you MJ