It's odd that OP shows two posts but a search shows up only the one in this thread. Does a posters count remain if they delete posts or threads?
Three months before, I met an accident injuring my hip and hands. I was taken to a hospital where I was undergone a number of scanning procedures. Finally I was recommended a hip replacement surgery. A few days after, my friend who is a surgeon told that some scanning procedures were not relevant to my treatment and he was absolutely right. I did a check up in his hospital and came to know that I just needed a simple operation, not a replacement surgery. I am trapped because I already paid some amount for it to the hospital. I want to the money back. How can I move legally? Your advice would be really appreciated.
what scanning procedures? Did they relate to other possible injuries from the accident? After all, you have to be diagnosed before you can be treated. It is not unusual to have negative results from a testing procedure. It is used to rule out possible injuries as well as confirm them.
how was it determined you needed only a "simple operation" (is there really such thing?) as opposed to the replacement? Was it possible the replacement was the best option for treatment? What was this "simple operation" that would have been a more proper treatment?
basically, if you want your money back, you ask the hospital. If they refuse and you believe they owe you anything, you sue them. If you have a valid basis to demand your money back or not is impossible to determine from the minimal information you have provided.