If the computer is broken or having problems then there might be some difficulties. Then the teachers will call the student using the student's home phone number and teach over the phone.
If the student is out of town and is not able to get to a computer, we will call you on your home phone free of charge. We believe this service makes us one-of-a-kind.
We are able to call not only to home phones, but also to Korean mobile phones (but in this case the cost is KRW 2,000 for one 26-minute lesson). If the student's phone is a smart phone and have access to a good wifi or LTE connection, they can use Skype on their phone for the lesson (free of charge, of course).