Provide more info so people here can help you
-Which visa office did you apply from ?
-What service did you use (online or paper) visa application process?
-Which course did you apply for ?
-What are your past qualifications ?
-For how long will you stay in Canada? , if more than 6 months, then,
Did you submit your medical examination and police clearance certificate with your application?
After answering these questions mention above, Members will be able to aid you.
Regards,
Yildiz