Well,
1. Do write to to them at
https://www.wes.org/ca/contact-us/ or
inquiryca@wes.org or
canada@wes.org
2. Call them up but be advised their wait time is colossal . Phone number (+1) 800-361-6106
3. If everything else fails, write to BBB-Canada at
https://www.bbb.org/en/ca, launching a formal complaint. But make sure, you've entered your name correctly while filling out the details.
Don't worry, you'll get it sorted eventually. Just be patient.