I would complain to AA, Wyndham, the hotel manager, the company that owns the hotel, the health department, and the person on the local Dallas paper who handles consumer complaints.
AA should care who it pays for hotel rooms, as bad hotels reflect poorly on AA, and WILL cost it passengers. Assuming Wyndham isn't the owner of the hotel, they should care about the standards of properties carrying their name.
The hotel should care because it might lose its license and/or its ability to get business from AA and the people who stay there.