How did they torture the Hatter when they took him to the red queen;s দুর্গ

First of all, calm down. You're not the one being tortured. ;)

সেকেন্ড of all, it's never specified in the movie. Actually, in the movie he doesn't appear to have been tortured at all. Now, there could have been some unseen damage (i.e., wounds from a whip, which would have been covered দ্বারা his shirt) but it isn't like ডিজনি to put that in a PG movie.

In the first draft of the script, it's implied that he was প্রদত্ত the works: punching, kicking, whipping, hair-pulling, etc. But that's the first draft.