Customer service hours

This is silly, but I can't seem to find the hours for residential support (except the local store). Oliver tells me there are agents available 24/7, but when I try to click through, it tells me that it's closed and to try later. I am having the same experience with phone support, even though it's after 8am EST, which was the starting hour according to the only page I found that showed a start time at all. It says there is currently a high call volume, also, which is weird if service is closed. 

Thanks!