Slow your roll. The Tech Support forum is a community-supported effort. I’m a volunteer and fellow player, not an employee of Blizzard. I only offered help on one of the topics you mentioned because it has been resolved according to other reports and my own experience. But just as an FYI: there is no requirement for MVPs to address every concern in your post; and unlike staff, I will not tolerate you berating me. Follow the forum rules and treat people with respect, period.
When your internet goes down, regardless of the trigger, it means that your network drivers or network hardware crashed.
Read more: Common Technical Issues and Solutions - #25 by Drakuloth
Edit: You didn’t mention if you tried a cable or an alternative connection which can often resolve or point directly to the issue. When adapters or routers start failing/have too stringent of permissions, games requiring 60 packets and up per second can look like a network flood and your devices will shut themselves down. But Blizzard game clients don’t have system permissions to control network adapters or routers.
If you require staff assistance, you should use the ticketing system again, which is available 24/7.