The thread title should be changed. If these were booked as saver awards - these were not codeshare flights - awards are always booked on the operators flight numbers.

The advice of the previous posters are correct - the complaints are with US, and the passengers traveling should file it. Just one thing to add - leave the overbooked F cabin and "anxiety" out of it - they still flew to DUB in F. That will distract from the main issues which are the baggage, the broken tv, and the downgrade for the domestic segment (though the domestic downgrade, IMO, is also less important if it was a short hop to PHL).