What do you do when someone claims to speak for you or does so without your approval? For example, an interpreter or hearing signer who jumps in to interpret a situation when you haven't asked for their help and don't want it? Or someone who claims to speak for a group you belong to, and you don't agree with that person's beliefs?
This is a question for deaf and hearing people, since I think everyone occasionally finds him- or herself in this kind of situation.