E-planet Educational Services interview questions

The supervisor chatted with me on LinkedIn and offered a vacancy I accepted but in that time I wanted some experience in teaching adults but he offered kids&Teens instructor. I told him it is not what I want nowadays. He promised that he will offer this beside some kids and teens classes. I went to the interview but he didn't tell me what I should prepare before the demo which is not good, he didn't set time for the demo. I prepared a grammar lesson and when I have finished he told me why did you stop! I told him usually the demo is short he said you can continue and he did tell me that before. He gave the feedback not in detail but he told me the offer which is not good it was 60l.e per hour and no adult classes as he promised.