That's pragmatic, he/she made the calculation that you have little political weight. Chances are there are people who contributed to his/her campaign or who are members of the community with more pull, and that you and your family aren't part of that group, and current members of that group disagree with you on the topics you brought up to your member. Or maybe he just did the maths and decided that an hour's meeting would have a higher return on investment with someone else.

There's no easy solution: either you earn influence and use it to further your agenda (a la George Soros), or you try and build influence in some other way, such as publishing reasoned arguments in an easily shareable format, which is what the EFF is very good at. It's never been easier to have some impact.