I have been using TutorVista for about two months. So, far I would rate this online tutoring average. Sometimes the tutor does not know how to solve the problem and if you tell them the answer key, and they got a different answer they will say "double check the answer with your teacher." Also, if you were already scheduled a session, the tutor did not show up. That happened to me more than three times. Overall, it is an ok online tutoring.
Dear Ida, we apologize for your experience. We request you to please send us an email to care@tutorvista.com with your login id so that our customer service representative will get in touch with you and help you by resolving your issue. Thanks, TutorVista Customer Care