I declined a job offer and the boss was so rude to me but why?

Updates
9 mo
They gave me an offer just last Friday and after a week of thought I let them know I wasn’t interested anymore… I basically declined my offer because after the second interview with the boss I just had this bad gut reaction that he would be a nightmare to work with. I’ve heard worse some people worked in the company for a couple of weeks then declined surely that’s time wasting
I declined a job offer and the boss was so rude to me but why?
Post Opinion