I only worked for them on a summer job for one month. Definitely the bosses of the company are a bunch of racist users and I can't stand them. Whenever I went into the office, I felt incredibly unwelcome for someone who was considered an "employeed" of the company.
But as one person said earlier, the people lower down in the ranks are okayish (though the company seems to be divided), and Johanna was amazing. She is very very helpful and knows what her bosses are like as well, and tries to compensate for them - so don't blame her if bad things happen as she tries her best.
I think the 15% off has gone (partly due to Jo), as this never was an issue for me. It wasnt an issue for the teacher I was sharing a flat with and it hasnt been an issue (as far as I am aware) at this start of the new semester.