I have question regarding visa.i apply for sw visa and i received it on August 13 but due to unavailability of classes i deffer from September to January intake my course length is 2 year but i received only 9 months visa 4 already wasted due to deffer.now i reach in Canada on 23 december but i received sw permit for april 30 2023 both my visa and permit expire on same date please help me to tell how can i extend