In our church there must be some people who were healed by God, and our pastor certainly knows people being healed by the way you speak about. If really interested, I can ask and if he/she allows I can give you their e-mail or like that.

Hello, I suggest that you should read the book of Carlos Annacondia. I don't know the English title but translated from Hungarian the title would be "Listen to me, Satan". This book speaks a lot about the way of healing, too, and its bases.
Another book you should read is T.L. Osborn's. The title (translated from Hungarian) is aproximately "The ill is healed."
If you are really interested in it I can search for the real English titles of the books - I have them only in Hungarian.
The other way, I was also healed by God though not from being amputed. I can describe it to you as detailed as you want, if interested. Greetings!

I would love to see a well documented report of a person being healed by god. Especially if the person had an amputated leg or arm that grew back, in response to prayer. So far, I have found none that are indisputable.