You can make the appointment online, it worked for me, since I couldn't go every day like the person in the previous comment!
You have to go day by day pressing until you get the day your process is available if it doesn't work today try tomorrow, the day after and so on 1 week in the afternoon morning and night. It is a large number of people who go per day what if. Go early to wait your turn no matter what time your appointment is
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