Wrapped Intern interview questions

They were nice initially, but wouldn't answer any of my questions. I was told to write down my questions and bring them to the 2nd round of interviews. They made me sign a contract and asked me how much I made in my previous job- which is illegal to ask. They told me if I took out my cell phone I would be asked to leave. The 2nd round of interviews took the entire day. When I asked questions, they were not answered and then I was pressured by the interviewer as to why I couldn't start the next day. At that point, I knew it was a not a fit for me. They are not reputable and treat employees horribly. THe pay is awful and the hours long. It is highly commission based..