What to do?

I'm currently in 11th grade, and I recently joined a so-called "Scholarship Program" that selected 100 students for an English course promising an IELTS-ready score.

The problem is that they're teaching from A1 level, while I'm at B2. Sitting through the classes is a complete waste of time. They claim it will take four months to reach B2.

The owner of the course is a total dick. He's fucking aggressive and i doubt he even has a proper IELTS score himself. I politely asked for a refund, explaining my situation, but he just said "Not my problem."

I don’t want to waste four months writing "He is hungry, she is angry" when I should be preparing for the actual exam. What should I do?

(The tuition was 600'000₮)