The company that I work for is pretty poorly regarded, and only offers unfulfilling, boring, low-skill projects. It gets candidates to join by lying about the role and saying that they'll work on interesting projects, and then after they start revealing that they lied and they'll be doing data entry forever. We depend on them not being able to go back to their old job and not wanting to quit with nothing lined up. We also do all our negotiations verbally as "sure, after your 6 month probationary period is up you can have a 20% raise", but no one ever gets this. We tell them that this conversation never occurred when they ask later on.
I'd like to be able to somehow let candidates know during interviews that I'm being forced to lie to them. What are some good ways to do so?