Can you speak to your therapist about it and ask them outright why he/she is speaking to your mother? Sounds like a strange situation and I'm wondering if you've told the whole story here? Either way, a therapist shouldn't be speaking to your family about you, unless you are in danger/a danger to someone else... or, as Bill said, unless you've signed a consent form but even then, it's not best practice.

your post does sounds a bit paranoid though - do you feel as though everyone is against you? It sounds strange that you are seeing a therapist simply because you don't movies or have a job, why did you go along with it? Maybe you could find your own therapist?