MetLife closed my disability claim on short notice with no explanation

Had bunion surgery on my right foot on the 3 of January, everything was going fine until I received a call from a MetLife representative of short term disability telling me that by February 20 my disability claim would be closed. I told him to file all the paper work to the doctor’s office so that the doctor could give them a better view of my medical condition. A couple of day past and he called me again telling me that they had received the doctor’s medical condition and that 3 months and two weeks was too much time for that kind of surgery. The person that called has been instigating me and telling me that maybe I am the one that doesn’t want to go back to work. I told him that my foot is still swollen, I can’t stand for a long time, and I can’t drive because the cast is on the right foot. He told me that this was not a medical reason for me to go back to work. He has been with an attitude with me since the first time he called and rude. This is stressing me out and now I feel mentally and physically worse because they don’t want to pay my disability and I need the money. I would like to go back to work but its not my fault that I haven’t recovered at full. The doctor stated that I can’t stand and need to keep my foot elevated and that I am still not able to go back to work.