I now officially hate the word "unprecedented". First of all, pedantically speaking, whatever difficulties we are having in these times have definitely been precedented in times past, probably to a greater degree.
And second, it always comes as a prologue to some kind of bad news. I mean, you could just come out and say: we're closing your work office, and your kids can't play outside. But first, a little preamble to get you in the mood: "We are experiencing unprecedented times..." No, its doesn't soften the blow. It raises my anxiety before you even get started.
Also, it's a lame excuse. "We are experiencing unprecedented call volume..." No, you're not. Your customer service sucks as always, and you're trying to blame it on... a lack of precedent, I guess.