If your inquiry is about your Shopify store, please open the ticket with Shopify merchant support!
For order-specific questions, reach to the merchant directly.
Go to: https://www.shopify.ca/contact
Click on "help center" Scroll all the way down, and click on "Contact Shopify support"
Follow the steps on the page
I hope the answer was helpful!
Ok, so in that case, go to the store website where you have placed the order and look for the Contacts page. Send an inquiry to the merchant.
If you cannot reach the merchant, then open the ticket with Shopify support via the link provided.