Thank you for the hugs and advice.
No, it was another one. I have the impression that they were talking behind my back and that they feel stronger when attacking me, maybe because they felt I was scared of confrontations and did not know how to stand for myself. I thought by being nice and doing my job it would be enough.

I left because it was the best thing to do, I started to have spots on my face and usually my skin is quite clear, I had difficulty sleeping and I am not the type to talk about my problems so I was scared of the consequences for my health. I think they did not deserve me as well. They had no compassion. A lot of weak people there.

Since this happened I did lots of research and I have a few ideas why it happened that way. Sure they were rude and awful but I didn't know about boundaries and how to assert myselt and as the expression said "what doesn't kill you makes you stronger", and it's true in my case.