My account not switching

do not post personal information like your phone number, no one from Microsoft will call you from here, if you wish a call back you need to fill out the contact form for Support

https://support.xbox.com/en-US/contact-us

My account got hacked last year and switched from a US account to a Russian Account. I tried to have my account switched back and they told me that region switches could only happen once a year. They couldn't do anything for me, even though they verified
that my account region got switched after the hack.

All of a sudden, region changes aren't possible? Am I supposed to be stuck with a Russian Account forever? And lose all of the games I've bought on my this account? How ridiculous is that?

For more information on switching gamertags to other Microsoft accounts, try this article:

Switch a Gamertag to another Microsoft Account.

I was having this same issue, and I got the update to go away when I closed out Minecraft on my Switch. The switch version was using my microsoft account, so it may be that your account is signed in on Switch or PC.

Have a look at this link for help on switching your gamertag to a different account

support.xbox.com/.../switch-gamertag-to-different-microsoft-account