study permit

[melis]

hello, I entered the Canada(montreal airport) 2 days before with my student visa however I couldnt get my study permit in airport. Now embassy send me letter of Introduction. As far as I understand I suppose to show this mail at the airport to get my study permit. Where can I get my study permit letter without passing border again.

 

[UBC 2017]

Application for a study permit approved abroad
Foreign nationals whose application for a study permit was approved abroad but who did not obtain their study permit at a POE on their initial arrival (e.g., they failed to present a letter of introduction) may contact the IRCC Call Centre. The Call Centre will inform the Case Processing Centre in Vegreville (CPC-V) of the situation. The CPC-V will assess the foreign national’s eligibility against the case management system to verify their status. Once the foreign national’s eligibility is confirmed, the CPC-V will mail a study permit to the foreign national’s address. The foreign national may not engage in studies until a study permit is issued.

Check the "In Canada Situations" section here:
http://www.cic.gc.ca/english/resources/tools/temp/students/application.asp