Visit to the head office

I work in a store in BC Canada, I wish to visit the head office in Toronto and potentially meet the managers responsible for hiring in the field I’m interested in. I have tried applying online as well as writing mails to several people in the head office but I didn’t get no replies. Is it possible to visit the head office and possibly ask the front desk to let me see a manager? Is there anyone who’s working there and can tell me how and what to do to get in there? Thank you.