This site can’t be reached refused to connect.

I get this message way too much:

"This site can’t be reached
[mysite].com refused to connect."

It comes up on my mobile device, but I can't access it on my own web browser. What is being done to fix this so I can see my own webpage on my computer?

Also, how do I contact someone at Homestead directly about this? All respect to the community, but I'm paying for this so I expect customer service, especially when there is an error on their end.