I'm happy to complain to whoever else has the power to make changes, but I also always feel it doesn't hurt to let our elected reps know that we're not happy. (I also let them know when I think they're doing something right.)

Besides, I'm never entirely convinced that there's nothing elected representatives can do. Perhaps they can't do much about this particular situation, but there is the ability to make or change laws and regulations and to have oversight of companies. I always feel it's better to speak up than not to.