Interview worst experience

Yesterday went for interview in firm for HR.Reached before time also interview went well.But the interviewer lady herself was late half an hour.I waited there were 2 employees who were dumb enough they didn't know where was AC switch for 15 mins they just struggled to start AC in that cabin.Almost office was full of boxes for which she replied we shifted here recently.I gave answers to every questions as much as I know about recruitment.Also, I do have gap from August 2023.So I thought it will be straight Yes or No from her.But to my surprise she herself was confused she told me to come from Monday for a week let's see how it goes then will decide.She said hire someone in week for us then will see.I mean why will I work free for her?Yeh thodi na kirana shop hai ki work for week will see.Also,she told will send offer letter with such terms & conditions but not received anything from their end.My whole day ruined by this interview.Facing worst interviews and people.