I wish I had found this site first because I'm guessing that many of the positive reviews on Glassdoor must be professionally written. I can confirm that many of the so-called recruiters at InsightGlobal sound very young and inexperienced.
Often they have no clue what the jobs are or any of the job content and are just going down a checklist and ask generic questions and providing generic responses. I don't know how they can claim to represent candidates to clients so that they can have any confidence. They aren't even really all that good at sales practices either. I'm guessing they must have thrown all these college grad kids in a quick boot camp sales training seminar and then put them in a sales pit.
I would definitely steer clear of them. Their incompetence is astounding.
It will likely be a waste of your time. You won't feel valued as a human being at all.