If only calling "representatives" still worked nowadays in the age of blatant corporate lobbying... it's really hard not to completely despair, because is there

If only calling "representatives" still worked nowadays in the age of blatant corporate lobbying... it's really hard not to completely despair, because is there _anything_ we peons can do? (I used to call my senators and house reps about things, but it never got more than a polite "thanks, but I don't care" and now they don't even bother to reply at all)