Not at all. Your Randstad consultant wants you to take a job that is in line with your capabilities, experience, and aspirations. We don't want you to accept a position that does not meet your expectations.
If you do not think you will be able to finish an assignment, or if you're simply not interested in the job proposed by your consultant, we encourage you to explain to the consultant why the job is not the right fit. Our goal is to find you a job that excites you, that you're passionate about!