OMG I need to vent !!

I went to my 7th job interview this year :( It was quite a nightmare because the interviewers wre quite rude. One of the interviewers didn't even greet me while entering the interview room . I didn't mind that much though . Then throughout the interview , they seem to focus only on negative aspects of my CV . I believe I have a decent cv for someone on the job market since 2 years only . I have one year of working experience and am even over qualified for the position I applied . What I can't seem to figure is why they even called me for an interview in the first place ? They saw my CV before the interview, why call me just to be rude ? I was very nice to them and appeared unaffected by their negative attitude. They looked at me like I was worthless or looked alien to them . I am not stupid and hope they got the point . I will be very surprised if I get a call again from them