No responses to (urgent) e-mails!

1. On Tuesday, Nu'Dor sent me an invitation to a CSOS meeting, an hour before the meeting. I rep**** to the e-mail (hours after the meeting) on Tuesday. 2 days later and still, I received no response to my e-mail. 2. On Wednesday (yesterday) I sent an e-mail to Nu'Dor regarding an urgent matter. I marked the e-mail as urgent, requested acknowledgement of receipt and feedback, as well as that the matter receive urgent attention. A day later and still no response to my e-mail.