Not calling, writing, or giving testimony translates into our voices not being heard. We all have to ask the question, "Do our Representatives represent us?". If the answer is "No", then we must vote them out of office. If only their devoted followers (minions) call, write, and give testimony, then they can justifiably say they are representing their constituents.
Our voices must be heard, or we cannot complain about lack of representation. 
Following the votes of our "Representatives" has indicated that most, not all, appear to vote lock-step with their political caucus and are NOT representing their constituency. If your Representatives are not representing you, work very hard to
VOTE THEM OUT OF OFFICE!