That's pretty much it, Mr. Chair.
I have been trying to get in touch with them since Monday of last week. The situation is a bit strange. Usually, when witnesses don't want to appear, they say so. However, in the case of IT/NET, all I have heard all week is the sound of silence. Finally, as Mr. Chair said, I found out that the people to whom I was sending messages had retired last September.
I also contacted the company's reception desk. It's a bit of a mystery, but my messages have gone unanswered. The current IT/NET employees are aware of the committee's invitation. They are supposed to discuss it at the beginning of this week. I should be able to talk to them today or tomorrow and find out whether they want to appear before the committee, provided that you still want to hear from them.