[Redmi Note 10 Pro] BrimoFan123:
End of story is as follow:

Xiaomi Global Support gave a me a link to another portal where I have had to answer bunch of questions in so called "unlock application/request".

All these questions was easy to answer because I knew all of them.

Questions were:

Associated phone number? Answered.

Recovery e-mail address? Answered.

IMIEI number? Answered.

When device was in use? Answered preciasly between which days the phone was in use.

What is the phone number used with this device? Answered.

When device was switched on? Provided exact day.

In which country phone was purchased? Answered.

As instructed I was waiting 15 days for the result of my "unlock application"

When I did not received it I asked "where is reply for my unlock application"?

Got the response: "If it has been over 15 working days and you still don’t receive any reply, it indicates that the unlocking request is rejected due to incorrect information"

So I asked: "WHAT INFORMATION I HAVE PROVIDED IS NOT CORRECT?"

And then ping-pong started with bull****-corporate templates sentences:

"As mentioned in Cassie's email, we have tried all the methods to restore the account, there may be certain required information you provided is not correct. So it is unable to unlock, so we suggest you to go to service center for unlocking."

"I would like to inform you that when you submit unlock application, system requires you to fill in lots of information, may be system verified some information you filled was not correct. As this application is verified by system so your unlock application did not pass. therefore we suggest you to go to service center to unlock."

"I mean the information when you filled in the "submit unlock application",may be some information you provided was not correct and could not be successfully verified by the system. I hope the above information helps you."

"Our prime motive is to serve customers and make them smile rather than making them discomfort. Please accept my undeserving apologies for the discomfort this might have caused. In order to provide our users with the accurate and expedient resolution regarding any issue they may face, we are relentlessly working hard to help every Mi user. We do understand your urgent mood after encountering this issue."

Finally I have answered:

"You are thieves and criminals. You don't let me use my own phone. Your security procedures are pathetic and designed to steal the phone from the owner.

Are you able to think logically?

If the phone was stolen, how would I know what the Mi account number is, how would I know what associated phone number with it is, how would I know when it was used, how would I know what phone number was used with this device?

I have answered these questions and these are proofs that this is my phone.

But you keep blocking my phone. You are criminals and thieves!!!

You write: "We are not authorized in this regard, please understand and support us" Should I support you? In what? In your theft business? Do you know that I will pay some John in Burkina Faso and he will unlock my phone?

What is your "it is our commitment and duty to protect our users' privacy" all about? Hypocrites! I'll unlock my phone like a common thief because you legally won't let me do so and this is what your "security" is worth!

I will NEVER EVER buy any Xiaomi device again! My family members too. This is your achievement! Congratulation!

Please send my above response to you manager. He will be proud of you"

and I paid a guy in "Burkina Faso" (as any criminal can do) who deleted my Mi account on xiaomi servers and then I was able to use my phone again. And this is the value of their "security concern"

Phone is just sold and Xiaomi company doesn't exists to me forever.