I live in Germany. I speak German a little better than my wife, so I often solve questions by phone, but some services are fixed on my wife, because it is easier (she has an unlimited visa, and I have a renewable).
Usually there is no problem, my name is Ivanova Oksana Igorovna - and it's okay.
I call the next office, there they answer "Contact IDLOG, operator Miller! "
I begin to explain the problem, to register the application need to pass an identification. The operator several times asks me if I am really Ivanova Oksana Igorovna (usually everything rolls perfectly, ask the date of birth, a secret word and everything is okay). Finally, when I realized what it was about, I said in Russian, "I already understood that you are the same Mrs. Miller as I am Oksana, a contract for a wife, but she speaks poorly in German."
Mrs. Miller, whispering, confirmed the application and everything went well.
That is how we live!