DelSolar Solar Developer interview questions

Began with telephone interview by HR person, then two in person interviews including detailed presentation, and panel interview on site with two hiring managers in Taiwan on video conference. 2 weeks later an in person interview with same two people from Taiwan. No response after two more weeks. Called to inquire and was told the position had been eliminated even though they kept renewing advertising for the job on Careerbuilder.com for two month after. Spend four separate days visiting and interviewing without even the courtesy of a rejection email.