Bad training experience. - English Tutor bei Datafin Recruitment: Mitarbeiterbewertung

I was contacted for a for an English online tutoring position. I had two days of training. After the two days I recieved an email saying that I don't qualify for training anymore for training anymore. I wasn't given any valid reason or explanation. This to me is shocking. Definitely not a place where candidates get treated fairly. It was said that there's a test to be written at the end of training but never something about being disqualified for training. I don't think they make decisions based on valid reasons and feels as though I was being discriminated against.