If you answered email in a timely manner and oh I don't know didn't leave sites down for 24 hours I wouldn't resort to this tactic, but unfortunately it seems to be the only way to get a word out of you.
Site still down. And it's not even a site with content you staff could object to.
Feel free to message me via the messenger here. It usually helps to bring the issue forward. Your report must have not made it through the queue of Monday tickets yet. It’s 5.30 in the morning here, so the team will only be able to look into it a bit later.
If it is a server issue, I offer both VPS and Dedicated servers and I can transfer your site from UNA servers to my servers for free. If this is an UNA issue, I have worked with UNA but I am not as versed in UNA as I am in Dolphin.