FYI: Click the sub-links in the article (E-mail paragraph) for contact info, including phone numbers.
My computer is slow, but so far I got:
MODERNA - Call: 1-866-MODERNA (1-866-663-3762)
24 hours, 7 days a week
And not used yet in our country, but it came up faster:
Astrazeneca . phone 1-866-478-3798