ESI Ergonomic Solutions interview questions

Was asked a few questions. Was given info about the company. Took about 15-20 minutes. Was given job offer right at the end of interview and was told I would be given a 30 day evaluation period. My start date was Tuesday the following week (interview was on a Friday, the week prior to start date). The evening before the start date, I was told by staffing agency that the company cancelled the position.