This is the first e-mail address that I have found,
This is not (to the best of my knowledge) an email address.
This is a webpage on the eBayCanada site, which hosts member to member discussions.
So, I'm wondering if part of your problem is using the wrong jargon. Lord knows there is enough obscure jargon online to confuse anyone.
I submitted the return request on 3/1 & I am trying to e-mail e-bay
Did you go to the Resolution Centre at the bottom of this page and open an Item Not As Described dispute?
Did you then, as suggested, contact the seller through the Dispute?
(If you didn't, don't worry too much. This is a suggestion, not a command. But it would be polite.)
Did the seller refuse a refund?
Did the seller refuse to send you a Return Shipping Label?
Note that if the seller is not in Canada, he can't send you a Return Shipping Label, and eBay does not realize this.