Arizona Foundation Solutions interview questions

On the website, there was no job description, only job title. I was asked to come in for a second interview but then found out when I got there that they "hired" me and that that day was my first day on the job. I was also told about 30 minutes after I first arrived what my salary would be and it was really low, $2 lower than the lowest requested pay I stated in the email with the owner before coming in for the "second interview." I should have just walked out right then or negotiated because it wasn't a salary I could live off of and it wasn't anywhere close to what I requested.