Thank you.
When did you notify the teacher of this emergency? Was it after the scheduled lesson? Did you not show up to the lesson at all or did you let the teacher know ahead of time that you couldn't make the lesson? If you did not show up to the lesson at all and did not notify the teacher until after the half hour or hour had passed and they waited around for you then it's in the right that they get the credits. Some teachers/tutors might be understanding but in general any time you don't show up for a lesson at all and don't notify the teacher/tutor at least somewhat into the lesson that you can't make it then no matter what the issue, bottom line then is you didn't arrive for the lesson. Also how many times had you taken a lesson with this teacher. Had you not shown up for previous lessons?
Italki is based in China and or Japan but I have gotten responses from very good English writer staff members that have been nothing but helpful. I don't think there would be a way to actually get specific staff members to help you. That's just like customer service with anything. You get who you get. My only advice is try reaching out to support again. But it seems like you've already made your decision to not use Italki again.