Hi Karine,
First of all, I'm sorry to hear you are having a difficult time with this. Unfortunately this is one of the downfalls of selling online.
I completely understand where you are coming from with this one. You want to make sure that this order is legitimate as it is vital for your business. We have a number of different ways to check orders against fraudulent activity, but in terms of reaching out to card providers, if we were to do this for all flagged orders, it just wouldn't be feasible.
First of all, to add tracking information you can do so by following this document https://help.shopify.com/manual/orders/status-tracking/add-a-tracking-number-while-fulfilling-an-order. I'm not too sure the process Canada post have, but if you wanted to check out our carrier calculated shipping, it will provide you with tracking numbers automatically https://help.shopify.com/manual/shipping/rates-and-methods/carriers
In terms of fraudulent orders,we realise you cannot eliminate all chargebacks, but there are some very easy ways to spot fraudulent orders and mitigate the risk to yourself and your business.
When reviewing orders be sure to look at the Billing Address and Shipping Address. If the billing address is in the United States, but the shipping address is in a country such as Pakistan or Russia, you may have a fraudulent order. Other things to look for are names between shipping/billing being different or the billing address not matching what is on file with the credit card company.
We now offer a detailed risk analysis section for each order. Please make sure to visit your orders page in your dashboard and look for any with red or yellow exclamation points. You should see an associated risk level and by clicking the 'full risk analysis' link you will be able to see the reasons we believe there could be some risk associated with those orders.
Any time you see a flag set on the account for any reason you should be careful to verify the customer via telephone before shipping anything out. It's better to be on the safe side than risk high chargeback rates which can cause losses on multiple levels. If possible, it's worth doing this on every order but we realize that can be difficult. That is why we try to provide you with the information and tools you need to make an educated decision on whether or not to ship your products.
If you would like to get even more in depth with your fraud prevention methods, you can also implement one of the many fraud prevention apps we have available via the Shopify App Store such as:
Free Fraud Filter -> https://apps.shopify.com/fraud-filter
Sift Science -> https://apps.shopify.com/sift-science
Signifyd -> http://apps.shopify.com/signifyd
It might also be worth taking a look at this article on how to force the shipping address and billing address to match on customer orders: Matching Shipping and Billing Address.
Also, make sure to at least enable rejection for orders that fail CVV by logging in to your account and then go to settings -> payments -> 'edit' under the Shopify Payments tab. From there click the checkbox for 'Decline charges that fail CVV verification.' and it would also be worthwhile clicking 'Decline charges that fail ZIP code verification.'
Hope that helps!
Shauna