People don’t know in which country they live.

here here :

xxx: As the package reached me, I managed to get married, change my surname and sign up with my husband.
Now the evil aunts don’t betray her because I’m not me.
____________________________________________________________

Marriage certificate + certificate of previous place of residence.

And not here! Ideally, of course, a mail worker can read the specified documents, conduct a logical chain and even agree that you are you. But! First, she has instructions, and in the instructions it is not written to issue a package on the basis of a marriage certificate, and, secondly, she will not do anything about it, because she does not need you, nor your package, nor her work... and in general.