Math teacher is destroying me mentally?

Hi everyone, I had the first 2 hours of math and got my 2nd school test (exam) back. Unfortunately I didn't get a good grade but my math teacher really wore me out today. My teacher is a very loud person, strict and really manipulative. First of all, I'm in the 8th grade and have to enroll in the next school with my half-yearly report card and I want to go to a good school so I need good grades. German, English and the other minor subjects are all fine but math became a problem. As I said, I got my math test back today and it's a 4 and I was yelled at the whole hour because I'm not studying. He said we'd already done that in class but I still made the same mistakes. I had to stand at the blackboard for a really long time and I was one of the few who had to. Then when I asked about a semester exam he said I needed at least a 1 to get a 3 on my report card and laughed at me and said I wouldn't be able to do it because the school test turned out badly anyway. He really killed me mentally for those two hours. I can't even put into words what he did, it was horrible. I'm not the kind of person who likes to cry or cries often and I'm pretty strong and self-confident but after those two hours I was so mentally exhausted that I burst into tears and my mum had to pick me up. He weakened me so much. And he's always like that in class, all my friends can testify to that, but today was, was hell. My mum came to pick me up and they're having a talk with the teacher soon because incidents like this have happened before, but not as bad as today. He also claimed that he would make the exam difficult and use the difficult examples because he knows I won't pass it anyway. Mum said I should file a report but is that even possible? And what should I do? I don't want to take the exam with this teacher and he's really destroying me. But I need a good grade and I don't want to let it get me down.