Spiraledge interview questions

They set up an interview via a recruiter. When I got to the interview, they sent me the wrong teams link and had two ongoing meetings for my interview. When they finally sent the correct interview the vibe was off immediately. They then proceeded to ask me questions regarding what I would do to help improve their IT department at a warehouse they had in Cincinnati. Then when I gave my answers, they were visibly writing them down. It was obvious they were attempting to steal my ideas. As a senior level systems engineer I thought this was hilarious. I'm going to be sending them a invoice for a tech consultation instead of the interview I was booked for. They mentioned their entire staff uses IPOD's and that I'd be helping fix IPOD's. What a joke. They sent me a rejection letter two weeks later like I would even consider working there - which was the icing on the cake.