You can call to thank your reps for standing up for your privacy as their constituent, you can call regularly to emphasize that they need to convince their counterparts who disagree, you can work to convince others in your country or may in other countries to also call and fight back.
It may seem like a lot, but even just one thank you call will send the signal that people are paying attention and that reps who defend privacy will get credit for it from their constituents.