If you have a problem like "the social security administration has been giving me the run-around and I can't get someone to actually look at my case", then your US Representative can in fact be super helpful. Unlike legislation, it is an opportunity for them to unambiguously help one of their constituents. Depending on the number of family/friends you tell about it, they can buy themselves 1-10 votes with probably just a phone call.

Source: multiple anecdotes from acquaintances and threads on /r/legaladvice