I went to service Canada on 2 June and they said i cant get sin because it was mentioned on my study permit that I am not authorized to work. So i went online and applied for confirmation for off campus work on cic website, i received the CIC Confirmation letter in 5 days and i went to Service Canada again and they gave me SIN in 15 minutes. They said i was the first to bring that letter
so they made a copy of my letter to show other students
I am from Conestoga college in Kitchener.
Good luck to all others...