Google Electro-Optical Engineer interview questions

Through a third-party recruiter/ contractor (Artech). No feedback, position named incorrectly there was more of data structure work than optical/ photonics work. (Artech) Poor communication, extremely rude behavior! Seemed very suspicious and wouldn't indulge basic details, then threatened me as if I asked the Google employees a wrong question on how the employment is structured. (I'm getting hired, it's my life, I should know what is going to happen to me?!!) Artech seemed very shady, Google definitely lost respect in my eyes and all my colleagues now know better.