You can occasionally contact steam support or the developers of the game to have this sort of thing resolved!, if you genuinely accidentally did it then you have every right to try and get the correct version as a replacement!
Goodluck!
i bought the wrong copy of the game and it is region locked to: Armenia, Azerbaijan, Belarus, Georgia, Kyrgyzstan, Kazakhstan, Moldova, Republic of, Tajikistan, Turkmenistan, Uzbekistan, Ukraine, Russian Federation. Will accept tf2/cs:go keys as well.
You can occasionally contact steam support or the developers of the game to have this sort of thing resolved!, if you genuinely accidentally did it then you have every right to try and get the correct version as a replacement!
Goodluck!