This was simple: their HR reached me by phone and appointed technical interview.
Interview was by Skype, conference call and remote desktop all together.
There were no introductions or greetings. They simply gave me the task and asked me to solve it. It took me longer than they have expected. Once I have told them I have finished the implementation of first part, they said, they have no time for the rest part of interview and bye bye.
That is it.