Was there any notice that Focus Home Interactive will be leaving the summer sale before it ends?

I can't find a single mention of it, not even in the newsletter, and the staff (both English-speaking and Russian-speaking) have been ignoring questions since yesterday.

Let me guess, the sale has been going on for weeks now, but after certain titles have been removed from the ongoing sale, you have suddenly become very interested in them.

yes

Its still odd they silently removed em from sale as they seemed part of the summer sale

You're correct - this was the sale page - now no longer listing any discounts:
https://www.gog.com/partner/FHI

Could not find anything on GOG regarding this specific items, but Focus Home Interactive themselves stated they would run until June 28th on Twitter, screenshot attached:
https://twitter.com/FocusHome/status/1403004032537530368

Quote from Twitter:
Discover @GOGcom's Focus Home Interactive Collection during the summer sale and dive into mysterious new worlds for up to 80% off until June 28: gog.com/partner/FHI

______
Edited a minute later: Fixed typo and broken link formatting.

There was a countdown timer on one of the panels on the front-page for it (you know the one that shifts to show a different game or deal) So it wasn't silent.

Well, since Focus was tweeting 28th as well, it seems there was some confusion.

Whoops. I'm used to procrastinating until the end of the sale to decide what to get.

I was planning to grab some games from Spiders (The Technomancer and Mars: War Logs) later this week when I get my paycheck.

That's why I'm wondering what went wrong.

There is a thread somewhere around here with a list of mistimed promos; you could probably bring it to them.

Let me guess, someone stole your sweetroll.

I will say this...

... GOG has been good about making good when they've mislabeled a sale in the past. Certainly worth a try if you have ads to back up your claim.

You could maybe pull up the twitter message and screencap it?

Wo, wo, we have a tough guy here.