Who designed the latest 10 update?

My Windows 10 has just been automatically updated. My PC is completely misfunctioning. The airplane mode became automatically switched on, took a long time and reboot to get back to internet connection, the default programs for opening files have changed, I had greek polythonic as a secondary key board and now Greek has become my default language and I cannot change it back to Spanish (all the messages appear in Greek!). I have already lost more than two hours of valuable work trying to fix things. Is there a way to go back to the pre-update settings?

That's definitely not the typical behavior of the update. I've noticed that my Airplane Mode icon in the Notification Center is often showing as on, although all of my connections are active.

All Windows updates are extensively tested before being released and are in use in millions of computers with no problems at all. But when such numbers are involved it is inevitable that some small percentage will have issues. And even a tiny percentage of these will equate to large numbers.