This company has an entire department devoted to flagging and fining it's teachers. Basically, they work overtime taking their money from you! If you complain, they punish you by cancelling your classes and giving thenm to someone else especially those on the Free Trial team! It is so mean, what they do! My morale went throught the floor and I absolutely LOVE to teach and I am very good at it. Shame on 51talk. By the way, they have so many bad reviews, they have tried to change their name to TWOSIGMAS, same company. Be careful!