After some research, I found other company emails that can be contacted to try to resolve the situation.
exch[.]cd abuse@nic.cd,
david.k@ocpt.cdI sent a report here as well... However, it seems that the second email is not correct:

And, of course, I received an email from Mailer Daemon, saying the email was not sent... I hope though it was sent to the other address. I also added eXch in Bcc. Let's hope for the best...