Appointment only and make sure to bring the specific letter from them about it. Or the number of the form that u filled. Also, you can check your status online on their website, but they usually don't keep anything updated. Or you can call their number, someone that never knew about your case it will answer you or might call you to make an appointment, if so make sure to take the PiN and request number correctly , you gonna need to print your letter online in case they call you.
Pretty sure appointments only
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