Southeast Orthodontics interview questions

Set up interview via text message. First interview went great. I was asked to come back for TWO working interviews. They told me they'd get back to me with a decision. After some time I reached out and they let me know the job was on hold. I asked about the working interview pay and they respond with, no pay for a working interview! Labor laws state I should of been paid at least minimum wage. No feedback on how that working interview went and apparently now the job is posted on Craigs list.