Lifewood Project Manager interview questions

The interview took 3 times (1 screening & 2 with management level). Interview was friendly but interviewer couldn't provide exact answer the role, responsibility and output (product) of the company. After one month of interview, HR came to me with offer position but 2 days later they rescind the offer. It give me a feeling that they send the offer to few candidates and play first come first serve game. Overall, I left bad impression to this company.