@DAVID TEVDORASHVILI Thanks for reaching out. You can try one of the following methods to unblock yourself :
1) If you have set up other options for security verification, select Other verification options, and then try again by selecting a different option. Also, make sure that your phone numbers are correct in your user account settings.
2) Ask another global admin to confirm whether your phone numbers are set correctly in your user settings.
3) Contact Office 365 Support to unlock you and provide options.
Here is the office 365 Geogia support number : 032 297 0124
Dialing instructions can be found here : https://video2.skills-academy.com/en-us/microsoft-365/admin/support/georgia?view=o365-worldwide