New sellers do get targetted by scammers. It's one reason us old hands encourage newbies to do some buying to build some feedback before selling.
2 items opened as not delivered but signature given .
Just put the tracking/signature number in the Dispute. The scammer will lose and cannot leave feedback.*
2 parcels with tracking and signature have not moved from Mississauga in 5 days .
2 parcels have not moved from buyers hub in 5 days
Tracking tells us where the shipment has been not where it is.
In any case, eBay gave your buyers a window for delivery and they cannot open a Dispute until that window closes.
However, Paypal allows Disputes for 180 days from PAYMENT. Tracking numbers do help in those cases. And credit cards used to back Paypal accounts and on "guest accounts" have varied chargeback policies.
3 Charge backs / disputes .
Handling these successfully depends on the reason for the dispute.
The most important response would be:
I regret you are not happy with your purchase. Please return it for a full refund.
You can refuse returns, but you cannot refuses refunds.
If you have to send a Return Shipping Label to the USA, you can do this through Shippo. I assume you already are signed up for a Solutions for Small Business number with Canada Post?
https://www.canadapost.ca/cpc/en/business/small-business.page?
This will allow you to buy a USPS shipping label.
Then when the item is returned, and only then, do you refund.
And make a voodoo doll of put the buyer on your Blocked Bidder List.
*Feedback is not used by eBay to assess seller accounts, but negs are hard to live with for new sellers.
