Ah, no! Lost devices are the worst! What kind of phone did you have -- maybe there's a way to track it (if you haven't tried already)?
We don't store the content of messages, so I'm sorry to let you down here but there isn't a way to see them on the site. Do you have a back-up phone? If you can swing by a store and purchase a replacement SIM provisioned for your line, you could insert it into a back-up so you don't miss messages any longer! Was there insurance on your line so that a claim could be filed?
I'm sorry to let you down about the messages, but please let us know if there are any processes we can walk through with you that might help with this.
Just checking to see if you still need any help with this