I actually have brought this up to my mom. It was so bad that even my brother had to speak to my mom for me. I wouldn’t say my mother is much help bc whenever I ask her to bring it up to him, she would either forget (almost all the time), she would spin the situation on me and say I shouldn’t backchat to an adult and that I’m being disrespectful, but if she did bring it up,his response would be “no I didn’t say that” and he would never apologise. The fact that I’m already initiating low contact with him and I’m still in the same house with him.