Originally Posted by jsloan

You have a contract with both the TA and the airline, for different things. By using a travel agent, you're empowering them to act on your behalf with the airline, and instructing the airline to interact with them for the purposes of managing your travel. When the flight schedule changed, it's the travel agent that needs to pick up the pieces and reissue the ticket; they also handle the interface with you. In other words, the very thing you're blaming the airline for is specifically what the TA is supposed to do. (The codeshare likely added to your troubles).

What damages are you trying to obtain? Unless this is some sort of quixotic suit for the principle of the thing, I can't imagine any damages you could receive that would be worth the amount of energy you appear to have put into this.