Mitchell International Multiple Software Positions interview questions

The HR department of the company is one of the worst that I have come across. They schedule interviews for positions that were not even open and do not give any responses for months. When you try to be in touch with the HR people, they just simply don't answer your calls and do not reply to the emails. Basically its like once you are interviewed, you are no longer respected and the HR department becomes rude with you. Its their job to tell each candidate they interviewed about the final decision(if they ever have a final decision)! But they don't do their job well!!