I had friends like that. They would make fun of people that did things I did in front of me. If I asked them if they meant to make fun of me, they would deny it. They would ask me if I liked or didn't like things, then restrict or provide those things, respectively. It was so bizarre, that I even started making a log of the things they did. I eventually had to go no-contact with them because it became obvious they were just using my deficiencies and trust to hurt me for pleasure.
Keep a log of their behaviors, and after a while, look at it. Accept that that's how they are and decide if you want to put up with it or not.
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"Am I wrong?" - Walter Sobchak