I'd go back and demand to be issued a SIN on the basis that Service Canada's website accepts the IMM 1000. If that doesn't work demand to speak with a supervisor. It's not guaranteed but worth a shot.I tried going to service canada to get my SIN number. The person who was helping me was about to do it before the supervisor stepped in asking me to show my PR card. I will try getting a driver's license and health card soon.