You cannot call the UDI to book an appointment. Read here about how to book and change an appointment and find adresses for the police and embassies. You can normally not turn up to hand in supporting documents for your application or to get yourself a residence card without an appointment.
The Norwegian Directorate
Pb. 8108 Dep.
(+ 47) 23 35 15 00
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Editor in chief: Ingeborg Grimsmo