It is important to remember that not all recruiters or job headhunters operate with honesty and integrity. In this particular situation, the recruiter's behavior was not ethical, as they made promises they did not keep and failed to deliver on their commitments. It is understandable that you chose to accept another job offer given the circumstances. It is crucial for job seekers to be cautious and verify the credibility of the recruiters they interact with to avoid falling victim to dishonest practices.