I do agree with you 100% , I left Helen Group last month, and the company is not professional at all,

They really like to deduct any amount of money from the teachers' salaries with and without reasons,

They deducted some money from my salary because they did send me the legal documents to apply for z visa by DHL when I was at my home country however I have not been advised with this at all,

Also, I staid at the Hangzhou to do that medical check for some days, and they also deducted those days from my salary, they even let me pay the medical check fees first an then they said they will reimburse me those charges after some days, and also I have not been advised with this ,

They deduct from the teacher's salary for each hour if he is off an amount like 120 Yuan, so if you have 5 teaching hours per day, they will take like 600 Yuan from your salary if you were absent , can you imagine how much they want to take from the teachers ??!!!

Then they always pays the teachers very late, and sometimes they do not transfer the money on time may be on the 17th of the Month, if they do have a delay,

They usually offer a basic salary from 4000 up to 5500 RMB with a free house but the problem is they get from the schools at least 11 000 Yuan each month , and they take the rest of the money as commission, It is one of the worst companies I ever met in my life , unprofessional and some of them are rude people as well.

please never ever to sign a contract with them, even if it is your last chance in teaching here in China.