AMD interview questions

I had 2 phone interviews over 4 weeks. Generally discussed about current research projects. I was invited to meet the team in Boxborough, MA in December. I had around 7 personal interviews including one during lunch. The interviewers were pretty good asked questions on microarchitecture, projects, object oriented concepts, verification and logic design. I was informed by the recruiter that they'll have a decision by next day. I was told that the team was interested in my candidacy but wanted to conduct one more interview over Skype. I didn't here back from them for about 4 weeks when they told me that they have already identified a other candidate. Overall it was very poor and unprofessional job by the team manager and the recruiter.