I'm sorry for your hard time. Did you explicitly ask them what they meant by "you're not being bullied"? I see room for misinterpretation, like "yeah that was rude, but cut them some slack".
I've personally had many clashes with a friend feeling offended due to misinterpretations of what I have said, which make me tend to look at it from the other side. But I do not want to discount your feelings, you are valid ❤️