Once you pay for subscription, even high rated tutors are becoming neglective and untrustworthy. Either they keep cancelling classes or showing up unprepared. Preply, on the other hand, only offers you to transfer your balance from one to another until you find someone who would bother to provide you an average class. And untill then you probably will spend all of your money for this possibility. You can't request any refund no matter how much you are disappointed
