SunEdison Engineer interview questions

The interview takes more than 3 months, interviewer asked deep and thorogh questions. I got this opportunity from staff agent, and went on site for face to face after 3 rounds of phone screens. The whole process is not very orgnized, and I was asked to reschedule the interview once, and at that time I had already booked my tickets but did not get any reimbursement from the company.