English is too full

Hi all, I would like your opinions on this. To go to Australia you need to take english for the degree I am doing (i didn't know until this holidays) so I wanted to change from geography to english - i emailed my dean and she came back to me that English is full and she will put me on a waitlist :( I really hope i get a spot but is there anything I am able to do? This will affect my uni (obviously can still study in NZ but yk what I mean!)