The shop did not damage the frame.
Cannondale didnt damage the frame.
The Taiwan assembly factory caused the damage and odds are no one at C'dale ever saw the frame before the dealer opened the box.
As was suggested earlier work with the shop through the rep to get the matter resolved. If this goes nowhen then contact C"dale directly. If you go to them first chances are they will just bounce you back to the shop anyways.
The damage seems cosmetic.
Keep calm and carry on.