R. Glazen interview questions

A guy contact me through whatsapp and arrange interview. Do not provide interview info and application form. Interview delayed and the boss not happy why i cant complete form earlier. The boss attitude like we are "dog" to work with him. Ask previous salary and i do not want to disclose. I said if the my ex-boss offer me sgd6k, u will give me same amount ?I starting to rude because he was rude to me. My purpose is to end the interview and i wont take this offer.

The person who interview me is very arrogant and unreasonable , want me to do a trial work of 3 days . Even after interview . Want me to spend the rest of the day in office to try oit the working area . But i rejected the boss by the name of Mr Chan that i cannot stay aa i have things on ,he straight away ask me go back, he dont need me this type of worker. Come on . Ask me to work the rest of the day without pay . This type of employer is a cheat